Cannabis use and work-related injuries: a cross-sectional analysis.

BACKGROUND: Although the association of cannabis use with automobile accidents has been well-studied, the impact of cannabis on workplace safety and injuries is less clear. AIMS: The purpose of this study was to examine the relationship between work-related injury and cannabis use in the past year. METHODS: We performed a cross-sectional analysis of the Canadian Community Health Survey (2013-16) of working individuals. We used multiple logistic regression modelling to calculate the odds of experiencing a work-related injury (defined as non-repetitive strain injury) among workers who reported using cannabis more than once during the prior 12 months as compared to non-users. We repeated the analysis among participants working in high injury risk occupational groups only. RESULTS: Among the 136 536 working participants, 2577 (2%) had a work-related injury in the last 12 months. Of these 2577 who had a work-related injury, 4% also reported being a cannabis user in the same period. We found no association between past-year cannabis use and work-related injury (odds ratio for work injury among users 0.81, 95% confidence interval 0.66-0.99). The association was unchanged in the subgroup analysis limited to high injury risk occupational groups. CONCLUSIONS: We found no evidence that cannabis users experienced higher rates of work-related injuries. While awaiting prospective studies, occupational medicine practitioners should take a risk-based approach to drafting workplace cannabis policies.

Sex differences in osteoporosis self-efficacy among community-residing older adults presenting for DXA.

The Osteoporosis Self Efficacy Scale was determined to equivalently measure calcium and exercise beliefs in both sexes. Despite data illustrating men's and women's similar self-efficacy, gender differences in clinical predictors of self-efficacy imply that efforts to improve care must account for more than self-efficacy. INTRODUCTION: To understand the extent to which the Osteoporosis Self Efficacy (OSE) Scale is reliable for both men and women. A secondary objective was to evaluate sex differences in OSE. METHODS: For this cross-sectional study, we analyzed data collected as part of the Patient Activation after DXA Result Notification (PAADRN) pragmatic trial which enrolled 7749 community-residing adults aged 50 and older reporting for bone densitometry. We used univariable methods, item analysis, exploratory and confirmatory factor analyses, and linear regression to evaluate sex differences in OSE responses and measurement. RESULTS: In this sample, the confirmatory factor analysis model for OSE both overall and within groups indicated a poor fit. The sex differences in the measurement model, however, were minor and reflected configural invariance (i.e., constructs were measuring the same things in both men and women), confirming that the OSE was measuring the same constructs in men and women. Men overall had higher exercise self-efficacy and women higher calcium self-efficacy. Overall, education, hip fracture, and self-reported health status predicted exercise self-efficacy whereas prior DXA, self-reported osteoporosis, and history of pharmacotherapy use did not. Predictors of calcium self-efficacy differed by gender. CONCLUSION: The OSE can be used to measure calcium and exercise self-efficacy in all older adults. However, gender differences in clinical predictors of self-efficacy and the lack of an association of prior DXA with self-efficacy imply that interventions to improve self-efficacy may be insufficient to drive significant improvement in rates of osteoporosis evaluation and treatment. TRIAL REGISTRATION: Patient Activation after DXA Result Notification (PAADRN), NCT01507662, https://clinicaltrials.gov/ct2/show/NCT01507662.

A Systematic Review of Interventions to Follow-Up Test Results Pending at Discharge.

BACKGROUND: Patients are frequently discharged from the hospital before all test results have been finalized. Thirty to 40% of tests pending at discharge (TPADs) return potentially actionable results that could necessitate change in the patients' management, often unbeknownst to their physicians. Delayed follow-up of TPADs can lead to patient harm. We sought to synthesize the existing literature on interventions intended to improve the management of TPADs, including interventions designed to enhance documentation of TPADs, increase physician awareness when TPAD results finalize post-discharge, decrease adverse events related to missed TPADs, and increase physician satisfaction with TPAD management. METHODS: We searched Medline, EMBASE, CINAHL, Cochrane Database of Systematic Reviews, Cochrane Database of Controlled Clinical Trials and Medline (January 1, 2000-November 10, 2016) for randomized controlled trials and prospective, controlled observational studies that evaluated interventions to improve follow-up of TPADs for adult patients discharged from acute care hospitals or emergency department settings. From each study we extracted characteristics of the intervention being evaluated and its impact on TPAD management. RESULTS: Nine studies met the criteria for inclusion. Six studies evaluated electronic discharge summary templates with a designated field for documenting TPADs, and three of six of these studies reported a significant improvement in documentation of TPADs in discharge summaries in pre- and post-intervention analysis. One study reported that auditing discharge summaries and providing feedback to physicians were associated with improved TPAD documentation in discharge summaries. Two studies found that email alerts when TPADs were finalized improved physicians' awareness of the results and documentation of their follow-up actions. Of the four studies that assessed patient morbidity, two showed a positive effect; however, none specifically measured the impact of their interventions on downstream patient harm due to delayed follow-up of TPADs. Three studies surveyed physicians' attitudes towards the interventions, of which two studies reported improved physician satisfaction with TPAD management with the implementation of an enhanced discharge template and a notification system when TPADs finalize. DISCUSSION: Discharge summary templates, educational interventions for discharging physicians, and email alerts when TPAD results are finalized show promise in improving management of TPADs. Given the complexity of the processes necessary to ensure follow-up of TPADs, rigorous evaluations of multifaceted interventions (e.g., improved discharge documentation of TPADs combined with email alerts when results become available) is needed.

Validity, reliability, and responsiveness to change of the "Osteoporosis and You" knowledge scale.

We studied the Osteoporosis and You knowledge scale in 7749 participants enrolled in a clinical trial. Results confirmed its psychometric properties in a diverse audience. Baseline scores were associated with better recall of bone mineral density test results at follow-up; however, the scale was not responsive to knowledge change. INTRODUCTION: The goal of this study was to confirm the measurement properties of the Osteoporosis and You (O&Y) knowledge scale using classic test theory methods in the 7749 men and women participating in the Patient Activation After DXA Result Notification (PAADRN) randomized controlled trial. We hypothesized a simple factor structure that would reflect the four-factor model previously published. METHODS: We conducted psychometric analyses which included item analysis, internal consistency reliability, construct validity using exploratory and confirmatory factor analysis (EFA and CFA), comparing knowledge levels across pre-specified groups, and responsiveness to change. RESULTS: PAADRN participants were predominantly college educated, White females with low bone density, and a moderate level of 10-year fracture risk. EFA revealed four domains closely matching those in two previous reports. While overall scale reliability was minimally acceptable at 0.68, the reliabilities of the domain subscales were unacceptably low (0.59, 0.64, 0.45, and 0.36 for the Biological, Lifestyle, Consequences, and Prevention and Treatment subscales). CFA revealed the data fit the hypothesized model reasonably well with the items loading on their expected latent variable. The scale was not responsive to change, but although not significant, improved knowledge indicated better DXA result recall at 12 and 52 weeks. CONCLUSIONS: In the PAADRN population, the O&Y knowledge scale had psychometric properties similar to those previously reported. Over 12 and 52 weeks, participants did not demonstrate significant changes in knowledge, but those with higher knowledge at baseline were more likely to accurately recall their baseline DXA result.

The cost of a patient activation intervention for achieving successful outcomes: results from the PAADRN randomized controlled trial.

In a large, pragmatic clinical trial, we calculated the costs of achieving four successful patient-centered outcomes using a tailored patient activation DXA result letter accompanied by a bone health brochure. The cost to achieve one successful outcome (e.g., a 0.5 standard deviation improvement in care satisfaction) ranged from $127.41 to $222.75. INTRODUCTION: Pragmatic randomized controlled trials (RCTs) should focus on patient-centered outcomes and report the costs for achieving those outcomes. We calculated per person incremental intervention costs, the number-needed-to-treat (NNT), and incremental per patient costs (cost per NNT) for four patient-centered outcomes in a direct-to-patient bone healthcare intervention. METHODS: The Patient Activation after DXA Result Notification (PAADRN) pragmatic RCT enrolled 7749 patients presenting for DXA at three health centers between February 2012 and August 2014. Interviews occurred at baseline and 52 weeks post-DXA. Intervention subjects received an individually tailored DXA result letter accompanied by an educational bone health brochure 4 weeks post-DXA, while the usual care subjects did not. Outcomes focused on patients (a) correctly identifying their results, (b) contacting their providers, (c) discussing their results with their providers, and (d) satisfaction with their bone healthcare. NNTs were determined using intention-to-treat linear probability models, per person incremental intervention costs were calculated, and costs per NNT were computed. RESULTS: Mean age was 66.6 years old, 83.8% were women, and 75.3% were non-Hispanic whites. The incremental per patient cost (costs per NNT) to increase the ability of a patient to (a) correctly identify their DXA result was $171.07; (b) contact their provider about their DXA result was $222.75; (c) discuss their DXA result with their provider was $193.55; and (d) achieve a 0.5 SD improvement in satisfaction with their bone healthcare was $127.41. CONCLUSION: An individually tailored DXA result letter accompanied by an educational brochure can improve four patient-centered outcomes at a modest cost. TRIAL REGISTRATION: clinicaltrials.gov identifier NCT01507662.

The effects of a patient activation intervention on smoking and excessive drinking cessations: results from the PAADRN randomized controlled trial.

Patients may exhibit risky bone health behaviors. In a large pragmatic clinical trial, we tested whether a tailored patient activation DXA result letter accompanied by a bone health brochure led to smoking and excessive drinking cessations. The intervention did not, however, alter these risky bone health behaviors. INTRODUCTION: Besides dual-energy x-ray absorptiometry (DXA) screening and pharmacotherapy when indicated, beneficial bone health behaviors including proper calcium and vitamin D intake and weight-bearing and muscle-strengthening exercise should be encouraged. Similarly, risky bone health behaviors like smoking and excessive drinking should be discouraged. We examined whether a direct-to-patient activation intervention led to smoking and excessive drinking cessations. METHODS: The Patient Activation after DXA Result Notification (PAADRN) pragmatic clinical trial enrolled 7749 patients between February 2012 and August 2014. Interviews occurred at baseline and 12 and 52 weeks later. Intervention subjects were mailed an individually tailored DXA results letter accompanied by a bone health educational brochure 4 weeks post-DXA. Usual care subjects were not sent these materials. Smoking and excessive drinking were assessed by self-report at each interview. Intention-to-treat linear probability models were used. RESULTS: Mean age was 66.6 years, 83.8% were women, and 75.3% were Non-Hispanic-Whites. Smoking was reported at baseline by 7.6% of the intervention group vs. 7.7% of the usual care group (p = 0.873). Excessive drinking was reported at baseline by 6.5% of the intervention group vs. 6.5% of the usual care group (p = 0.968). Intention-to-treat analyses indicated no significant differences between the intervention vs. usual care groups at either 12 or 52 weeks post-DXA (all p values ≥ 0.346). CONCLUSION: An individually tailored DXA result letter accompanied by an educational brochure did not lead to smoking or excessive drinking cessations in patients who received DXA. TRIAL REGISTRATION: clinicaltrials.gov identifier NCT01507662.

Predictors of bone mineral density testing among older women on Medicare.

Although dual-energy X-ray absorptiometry (DXA) is recommended for all women ≥65 and is covered by Medicare, 40 % of women on Medicare report never having had a DXA. In a longitudinal cohort of 3492 women followed for two decades, we identified several risk factors that should be targeted to improve DXA testing rates. INTRODUCTION: DXA is used to measure bone mineral density, screen for osteoporosis, and assess fracture risk. DXA is recommended for all women ≥65 years old. Although Medicare covers DXA every 24 months for women, about 40 % report never having had a DXA test, and little is known from prospective cohort studies about which subgroups of women have low use rates and should be targeted for interventions. Our objective was to identify predictors of DXA use in a nationally representative cohort of women on Medicare. METHODS: We used baseline and biennial follow-up survey data (1993-2012) for 3492 women ≥70 years old from the nationally representative closed cohort known as the Survey on Assets and Health Dynamics among the Oldest Old (AHEAD). The survey data for these women were then linked to their Medicare claims (1991-2012), yielding 17,345 person years of observation. DXA tests were identified from the Medicare claims, and Cox proportional hazard regression models were used with both fixed and time-dependent predictors from the survey interviews including demographic characteristics, socioeconomic factors, health status, health habits, and the living environment. RESULTS: DXA use was positively associated with being Hispanic American, better cognition, higher income, having arthritis, using other preventative services, and living in Florida or other southern states. DXA use was negatively associated with age, being African-American, being overweight or obese, having mobility limitations, and smoking. CONCLUSIONS: Interventions to increase DXA use should target the characteristics that were observed here to be negatively associated with such screening.

Patient-activation and guideline-concordant pharmacological treatment after bone density testing: the PAADRN randomized controlled trial.

Patients often do not know or understand their bone density test results, and pharmacological treatment rates are low. In a clinical trial of 7749 patients, we used a tailored patient-activation result letter accompanied by a bone health brochure to improve appropriate pharmacological treatment. Treatment rates, however, did not improve. INTRODUCTION: Patients often do not know or understand their dual-energy x-ray absorptiometry (DXA) test results, which may lead to suboptimal care. We tested whether usual care augmented by a tailored patient-activation DXA result letter accompanied by an educational brochure would improve guideline-concordant pharmacological treatment compared to usual care only. METHODS: We conducted a randomized, controlled, double-blinded, pragmatic clinical trial at three health care centers in the USA. We randomized 7749 patients ≥50 years old and presenting for DXA between February 2012 and August 2014. The primary clinical endpoint at 12 and 52 weeks post-DXA was receiving guideline-concordant pharmacological treatment. We also examined four of the steps along the pathway from DXA testing to that clinical endpoint, including (1) receiving and (2) understanding their DXA results and (3) having subsequent contact with their provider and (4) discussing their results and options. RESULTS: Mean age was 66.6 years, 83.8 % were women, and 75.3 % were non-Hispanic whites. Intention-to-treat analyses revealed that guideline-concordant pharmacological treatment was not improved at either 12 weeks (65.1 vs. 64.3 %, p = 0.506) or 52 weeks (65.2 vs. 63.8 %, p = 0.250) post-DXA, even though patients in the intervention group were more likely (all p < 0.001) to recall receiving their DXA results letter at 12 weeks, correctly identify their results at 12 and 52 weeks, have contact with their provider at 52 weeks, and have discussed their results with their provider at 12 and 52 weeks. CONCLUSION: A tailored DXA result letter and educational brochure failed to improve guideline-concordant care in patients who received DXA.

Negative life events predict performance on an executive function task in young adults with developmental disabilities.

BACKGROUND: Recent research with typically developing children indicates that chronic stress can be detrimental to the development of executive function. This study extends this work to individuals with developmental disabilities and examines the longitudinal relationship between an indicator of chronic stress, negative life events, and performance on a task of executive function within a group of 30 individuals with early identified developmental disabilities. METHODS: Multilevel modelling was used to analyse the relationship between cumulative negative life events and response time on a Flanker task. RESULTS: As hypothesized, individuals who had experienced more cumulative negative life events in their families demonstrated longer response time, an indicator of less efficient executive function. CONCLUSIONS: The association between cumulative negative life events and executive function for children with developmental disabilities suggests the prominent role of the environment for development in this domain. These findings also suggest the importance of providing services, resources, and interventions that will help families adaptively cope with stressful circumstances.

Relationship dimensions of the 'Down syndrome advantage'.

BACKGROUND: Some researchers have proposed an 'advantage' for parents of children with Down syndrome over parents of children with other intellectual disabilities, especially in relation to experiencing less parenting stress. Others have maintained that these differences are an artefact of demographic and related differences. This study extends the investigation of possible differences in dimensions of parenting stress and also examines whether differences exist in maternal and child contingent responsiveness during mother-child interaction in these two groups. METHOD: Mothers of children with Down syndrome (n = 43) and undifferentiated developmental disabilities (n = 54) completed measures of children's adaptive functioning and behaviour problems, parenting stress and maternal social support. Observers rated the contingent interactions between mothers and children using the Nursing Child Assessment Teaching Scale. RESULTS: Once mother's age, education and social support as well as child adaptive functioning and behaviour problems were considered, neither parent nor child related parenting stress demonstrated an advantage for parents of children with Down syndrome. However, a 'Down syndrome advantage' was apparent for both maternal and child contingent responsiveness after accounting for maternal demographic and contextual variables and child attributes. CONCLUSIONS: Children with Down syndrome and their mothers have more positive interactions than children with other developmental disabilities, both in terms of the responsiveness of mothers and of child responses contingent on maternal behaviour. These findings suggest that both children with Down syndrome themselves and their mothers are contributing to a Down syndrome advantage.

The role of coping strategies in predicting change in parenting efficacy and depressive symptoms among mothers of adolescents with developmental disabilities.

BACKGROUND: Parents of children with developmental disabilities (DD) face greater caregiving demands than parents of children without DD. There is considerable variability in parents' adjustment to raising a child with DD, however. In line with a strengths-based approach, this study explores coping strategies as potential mechanisms of resilience among mothers of adolescents with DD. This study examines the frequency with which mothers use various coping strategies and the extent to which those strategies moderate the relationship between adolescent behaviour problems and aspects of maternal well-being. Both positive and negative dimensions of well-being are explored, with maternal depressive symptoms and perceived parenting efficacy examined as outcomes cross-sectionally and longitudinally. METHODS: The present study focuses on 92 mothers and their adolescents with DD. The adolescents had a wide range of diagnoses, all with continuing special needs. Data were collected from mothers through interviews and self-administered questionnaires when their adolescents were aged 15 and aged 18. A structured assessment of the adolescent was completed during home visits at age 15. RESULTS: Mothers reported frequently using strategies of denial and planning but rarely using strategies of mental and behavioural disengagement to cope with recent stressful situations. Adolescent behaviour problems were found to contribute to greater symptoms of depression and lower feelings of parenting efficacy as well as increases in depressive symptoms over time. Mothers of sons, but not daughters, reported increases in parenting efficacy across their child's adolescent period. Above and beyond adolescent factors, several coping strategies emerged as significant predictors of mothers' symptoms of depression and perceived parenting efficacy. Moreover, use of Active Coping/Planning, Positive Reinterpretation/Growth, and Behavioural/Mental Disengagement as coping strategies moderated the impact of adolescent behaviour problems on maternal depressive symptoms. CONCLUSIONS: This study extends previous findings by focusing on both positive and negative dimensions of parent well-being during their child's adolescent period. Adolescence can be a stressful time for parents, with typical developmental tasks entailing additional strains for parents of adolescents with DD. The present findings point to several coping strategies that may reduce the impact of challenging behaviours during this period on mothers' symptoms of depression and feelings of parenting efficacy. Certain coping strategies were found to exert a greater impact on maternal well-being for parents of adolescents with higher levels of behaviour problems, suggesting that interventions may benefit from an increased focus on this group of mothers with heightened caregiving demands.

Testing and treatment for osteoporosis following hip fracture in an integrated U.S. healthcare delivery system.

UNLABELLED: Older veterans with acute hip fracture do not receive adequate evaluation and treatment for osteoporosis, irrespective of their age and underlying health status. INTRODUCTION: Hip fractures are a serious complication of osteoporosis, leading to high mortality and morbidity. Prior studies have found significant undertreatment of osteoporosis in women with hip fracture. We examined the rate of bone density (BMD) testing and osteoporosis treatment among a predominantly male population hospitalized with hip fractures. METHODS: We conducted a retrospective cohort study of patients age 65 years and older hospitalized in U.S. Department of Veterans Affairs (VA) hospitals with hip fracture (N = 3,347) between 1 October, 2004 and 30 September, 2006. The primary outcome was receipt of BMD testing or initiation of pharmacotherapy within 12 months of fracture. RESULTS: The mean age of the study population was 79.0 years (SD = 6.7), 96.5% were male, and 83.3% were white. Only 1.2% of hip fracture patients underwent BMD testing and 14.5% received osteoporosis therapy within 12 months of fracture. Among fracture patients with minimal comorbid illness (N = 756) only 1.6% underwent BMD testing and 13.0% received pharmacotherapy. In logistic regression models, treatment rates were higher for women compared to men (odds ratio, 3.30; 95% CI, 2.16-5.04) and lower for blacks compared to whites (odds ratio, 0.67; 95% CI, 0.45-0.99). CONCLUSIONS: Evaluation and treatment of osteoporosis among patients with fractures is suboptimal even in an integrated healthcare delivery system with generous pharmaceutical coverage. This study suggests that the undertreatment of osteoporosis demonstrated in the private sector is also present within the VA.

Early childhood predictors of mothers' and fathers' relationships with adolescents with developmental disabilities.

BACKGROUND: The importance of positive parent-adolescent relationships is stressed in research on adolescents, although very little is known about this relationship when a teen has developmental disabilities (DD). We investigated the relationships of adolescents with disabilities with their mothers and their fathers in order to answer a number of questions regarding these relationships. In particular, we asked: are there differences in the relationships of mothers and fathers with their adolescent with DD? Are there early childhood predictors of the parent-teen relationship and are those based on variables that are amenable to intervention? Finally, do these predictors differ for mothers and fathers? METHODS: This study focused on the relationships of 72 mothers and 53 fathers with their 15-year-old teens with DD and their predictors from the early childhood years. Data were collected from parents through interviews and self-administered questionnaires, and from their children with disabilities through structured assessment when children were age 3 years and again at age 15 years. RESULTS: Analyses indicated that both mother-teen and father-teen relationships were predicted by earlier parenting stress. The father-teen relationship was also predicted by early behaviour problems, but this relation was mediated by parenting stress. Socio-economic status, type of disability and the child's level of functioning were not predictive of later relationships between parents and teens. Mothers and fathers did not differ significantly in their reports of perceived positive relationships with their teens. CONCLUSIONS: The findings from this study suggest two important points of potential intervention during the early intervention years. First, parenting assistance and support to reduce stress during the early childhood years can benefit both mothers and fathers. Second, helping families and children cope with and diminish problem behaviours is likely to yield multiple advantages for parents and children and deserves emphasis in early intervention and pre-school programmes.

The contribution of marital quality to the well-being of parents of children with developmental disabilities.

BACKGROUND: This study examines the contribution of the marital relationship to the well-being of both mothers and fathers of children with developmental disabilities. Parent well-being is conceptualized in terms of mental health, parenting stress and parenting efficacy. METHODS: These analyses are based on data from 67 families participating in the Early Intervention Collaborative Study, an ongoing longitudinal investigation of the development of children with disabilities and the adaptation of their families. Multidimensional assessment techniques were used to collect data from married mothers and fathers and their child with a disability. Mother and father data were analysed separately using parallel hierarchical regression models. RESULTS: For both mothers and fathers, greater marital quality predicted lower parenting stress and fewer depressive symptoms above and beyond socio-economic status, child characteristics and social support. In relation to parenting efficacy, marital quality added significant unique variance for mothers but not for fathers. For fathers, greater social support predicted increased parenting efficacy. Child behaviour was also a powerful predictor of parental well-being for both mothers and fathers. CONCLUSION: The findings support the importance of the marital relationship to parental well-being and illustrate the value of including fathers in studies of children with developmental disabilities.

Children with disabilities: a longitudinal study of child development and parent well-being.

This Monograph presents the results of the Early Intervention Collaborative Study, a longitudinal investigation of the cognitive and adaptive behavior development of children with developmental disabilities and the adaptation of their parents, extending from infancy through middle childhood. The study was designed to generate and test conceptual models of child and family development and contribute to the knowledge base that informs social policy and practice. The sample for the investigation reported here consists of 183 children with Down syndrome, motor impairment, developmental delay and their families who were recruited at the time of their enrollment in an early intervention program in Massachusetts or New Hampshire. Data were collected at five time points between entry to early intervention and the child's 10th birthday. Home visits were conducted at each time point and included child assessments, maternal interview, and questionnaires completed independently by both parents. Trajectories in children's development and parental well-being were analyzed using hierarchical linear modeling. Predictor variables were measured at age 3 years when children were exiting early intervention programs. Children's type of disability predicted trajectories of development in cognition, social skills, and daily living skills. Children's type of disability also predicted changes in maternal (but not paternal) child-related and parent-related stress. Beyond type of disability, child self-regulatory processes (notably behavior problems and mastery motivation) and one aspect of the family climate (notably mother-child interaction) were key predictors of change in both child outcomes and parent well-being. A different aspect of the family climate--family relations--also predicted change in child social skills. Parent assets, measured as social support and problem-focused coping, predicted change in maternal and paternal parent-related stress respectively. The implications of these findings for both the science of child development and the policies and practices of developmental intervention are discussed.

Influenza. Cost of illness and considerations in the economic evaluation of new and emerging therapies.

Influenza infection has been a burden to humans for thousands of years. Despite the fact that epidemics could be predicted with regularity, the lack of available prevention or treatment measures left humankind vulnerable to the harmful effects of this ubiquitous virus. While the pandemics of 1918 and 1957 are recent examples of the devastation that influenza may inflict, even in a typical year influenza infection and related complications cause significant morbidity and mortality. The development of an influenza vaccine during the 1940s marked a major turning point in the management of this disease. Vaccination of the elderly and other high risk patients has been shown to reduce morbidity and mortality and to be a worthwhile investment from an economic perspective. Despite these benefits, vaccine use in this group remains suboptimal. The role of annual vaccination for individuals at lower risk for influenza-related complications remains controversial. While prevention by vaccination is relatively straightforward, the treatment of symptomatic influenza-like illness with medication is more complicated. Differentiating symptoms caused by the influenza viruses from those caused by other common viruses is difficult. Currently available tests to document influenza as the cause of illness are either too expensive, too inaccurate or too time consuming to impact treatment. Symptom-based diagnosis remains the most commonly used strategy in clinical practice. The approval of the neuraminidase inhibitors (NIs)--zanamivir and oseltamivir--remind healthcare providers of the difficulties in diagnosing and treating influenza. NIs have been shown to reduce the duration of symptoms of individuals infected with influenza when prescribed within the first 2 days of symptoms. Whether these innovative agents are cost effective, however, requires a more detailed understanding of the benefits that these agents may offer above and beyond existing therapies. In this review, we examine the burden of influenza infection, diagnostic challenges and the clinical and economic impact of available interventions. Clinical controversies and potential areas for further investigation are also explored.

Family influences on adaptive development in young children with Down syndrome.

In this study we investigated the extent to which the family environment predicted differences in trajectories of adaptive development in young children with Down syndrome. The sample was comprised of 54 children with Down syndrome and their families who were studied from infancy through the age of 5 years as part of a longitudinal study of children with disabilities. Hierarchical linear modeling (HLM) was used to estimate the parameters of hierarchical growth models in domains of adaptive development. Results indicated that growth in communication, daily living skills, and socialization domains were predicted by measures of the family environment (i.e., family cohesion and mother-child interaction) above and beyond that predicted by maternal education. Further, Bayley MDI measures during infancy did not predict changes in adaptive development in any of the domains. The results are discussed in terms of implications for service provision and for expanding theoretical frameworks to include the development of children with disabilities.

Adaptation during early childhood among mothers of children with disabilities.

This study documents the extent to which child-related and parenting stress vary during the early childhood period among mothers of children with developmental disabilities. The degree to which specific aspects of the family environment predict stress levels measured at age 3 years and 5 years, after controlling for child characteristics and family income, is also investigated. The Parenting Stress Index was completed by 79 mothers of children with developmental disabilities at three time points: (1) within 1 month of the child's entry into an early intervention program (T1); (2) within 1 month of the child's third birthday (T3); and (3) within 1 month of the child's fifth birthday (T5). Data on child characteristics and family income as well as measures of the family environment (i.e., negative life events, cohesion, and family support) were gathered at both T1 and T3. Repeated measures analysis of variance was used to assess whether there was significant change in the child-related and parenting stress scores across the three time points. Two sets of hierarchical regression equations were also analyzed. The first examined which child, family, and family environment characteristics assessed at T1 predicted stress at T3. The second identified the predictors of T5 stress based on independent variables measured at T3. Child-related stress increased significantly across the three time points, whereas parenting stress remained fairly stable. By age 5 years, one-third of the mothers had child-related stress scores above the clinical cutoff point. Regression analyses revealed the importance of the family environment in predicting both stress outcomes. The only statistically significant predictor of child-related stress at T3 was family cohesion, whereas parenting stress at T3 was predicted by income, cohesion, and family support. The predictors of both child-related and parenting stress at T5 were the same. Greater family cohesion and fewer negative life events predicted lower stress scores at T5. The significant increase in child-related stress during the early childhood period warrants attention by pediatricians, educators, and other professionals who must evaluate the needs of families of children with disabilities for supportive services. Aspects of the family environment were shown to be critical and consistent determinants of both child-related and parenting stress throughout the early childhood period. This finding suggests that pediatricians, in particular, must assess more than simply the diagnosis or the cognitive impairment of the child with a disability to make informed decisions about the frequency with which they should see particular families and whether referral to other services is necessary.

Diagnostic testing for influenza: review of current status and implications of newer treatment options.

AUDIENCE: This article is intended for all clinicians caring for patients at risk for or infected with influenza. GOAL: To review the accuracy and utility of diagnostic tests for influenza and to compare them with clinical diagnosis. OBJECTIVES: 1. Discuss the epidemiology and scope of influenza infection. 2. Discuss available diagnostic tests for influenza. 3. Discuss the implications of newer options for prevention and therapy.