Knowledge about unintended pregnancy shortly after childbirth: An issue of ineffective counseling or adherence?

BACKGROUND: Being aware of the possibility of becoming pregnant shortly after childbirth before the resumption of the menstrual period is often overlooked but remains a significant contributor to unintended pregnancies and may lead to maternal and neonatal comorbidities. Exploring the extent of awareness and associated factors could help tailor more interventions toward reducing the rates of short-interval unplanned pregnancies. OBJECTIVE: This study explores the extent to which Ghanaian women are aware of the possibility of becoming pregnant shortly after childbirth before the resumption of the menstrual period and its associated factors. DESIGN: A cross-sectional study was conducted using the 2017 Ghana Maternal Health Survey. The women participants were sampled using a two-stage cluster sampling design. METHODS: We analyzed the 2017 Ghana Maternal Health Survey data of 8815 women who had given birth and received both antenatal care and postnatal checks after delivery in health facilities (private and public) and responded to questions on being aware of short interpregnancy intervals. A multivariable survey logistic regression was used for the analysis. RESULTS: Of the 8815 women, approximately 62% of women who received both antenatal care and postnatal examinations before discharge reported being aware of short interpregnancy intervals. Postnatal examination before discharge but not antenatal care was associated with a higher awareness of short interpregnancy intervals. Women who received a postnatal examination were more aware of short interpregnancy intervals than their counterparts (adjusted odds ratio = 1.29, 95% confidence interval: 1.03-1.61). Also, awareness of short interpregnancy intervals increased with age, education, knowledge of the fertile period, contraceptive use, and delivery via cesarean section. CONCLUSION: Over a decade following the initiation of Ghana's free maternal health policy, there remains a significant gap in the awareness of short interpregnancy intervals, even among women who received both antenatal pregnancy care and postnatal examinations before discharge. The unawareness of the short interpregnancy interval observed in approximately 38% of women raises concerns about the effectiveness of counseling or education provided during antenatal care and immediate post-partum care regarding birth spacing, contraceptive use, the timing of resumption of sexual activity, and the extent to which women adhere to such guidance.

A study found more women were unaware of pregnancy soon after birth before mensesUnplanned pregnancies may lead to worsened health conditions for mothers and newborn infants. One possible way this unplanned pregnancy could happen is through unknowingly becoming pregnant soon after birth before menstruation resumes. However, the more we know about pregnancy soon after birth before menstruation resumes, the better we can introduce measures to reduce it. This study examines how well Ghanaian women are aware of the possibility of becoming pregnant soon after birth before menstruation resumes and factors that may influence the awareness. This study analyzed 2017 data collected from women who received pre-delivery care and post-delivery checks before discharge from a health facility. The study findings revealed that 38% of the 8815 women who received both pre-delivery care and post-delivery checks were unaware of pregnancy soon after birth before menstruation resumed. Factors such as post-delivery checks, contraceptive use, delivery through cesarean section, women aged 30 years and over with secondary education and higher, and having knowledge of the periods more appropriate for a woman to be pregnant were more aware of pregnancy soon after birth before menstruation resumed. We proposed that effective counseling and adherence from women who are not planning to get pregnant soon after birth could help reduce the rate of pregnancy soon after birth before menstruation resumes. These unplanned pregnancies can also be avoided by educating women about birth spacing, contraceptive use, and the timing of resumption of sexual activity.

Help-seeking behavior among miscarrying women with and without post-miscarriage health problems in Ghana.

Understanding how frequently women seek assistance after experiencing a miscarriage could potentially help address unmet needs in managing post-miscarriage health problems (PMHP). However, most studies focus primarily on the causes and effects of PMHP and neglect the influence of help-seeking behavior on PMHP. This study examined help-seeking behavior among women who have experienced a miscarriage in Ghana, whether they sought help from healthcare professionals or not, and the impact it had on post-miscarriage health problems (PMHP). The study analyzed subsample data (N = 1,843) from the 2017 Ghana maternal health survey of miscarrying women aged 15-49 years who answered questions on help-seeking after a miscarriage from 900 clusters in ten administrative regions of Ghana, using a two-stage stratified cluster probability sampling design. The study used chi-square and modified Poisson with Generalized Estimating Equations (GEE) to examine help-seeking behavior among miscarrying women in Ghana and its impact on post-miscarriage health. The PMHP prevalence was 13.5% (95% CI: 12.0-15.1). Of the 1,843 women, 76.2% (95% CI: 74.3-78.2) sought help following a miscarriage, with 73.6% receiving help from healthcare professionals, 4.6% from non-healthcare professionals, and 21.8% receiving help from both groups. Help-seeking behavior was associated with factors such as education, place of residence, marital status, distance to a health facility, and money for treatment. Women who sought help had a 3.0% (Adjusted Prevalence Ratio, (aPR = 0.97, 95% Cl: 0.95-0.99) reduced prevalence of PMHP compared to those who did not seek help after controlling for other factors. Encouraging more women to seek help following a miscarriage could play a critical role in reducing PMHP, which can substantially improve their physical well-being. This finding highlights the need for more health education programs that address potential barriers in women at higher risk of miscarriage-related complications, including those aged ≥ 31 years, from seeking help after a miscarriage.

Discharge Disposition After Limb Amputation in a Publicly Funded Health Care System.

Understanding discharge disposition (DD) after limb amputation (LA) surgery allows health care providers and policy makers to adapt resources based on need. Studying independent prognostic factors for DD after LA in Canada eliminates the significant influence of payor source, as reported by researchers in the United States. We hypothesize disparities exist among DDs after LA in a publicly funded health care system. Retrospective review of Saskatchewan's linked administrative health data from 2006 to 2019 was used to identify independent socio-demographic factors, amputation levels, amputation predisposing factors (APF), and surgical specialty on 5 DD's: inpatient, continuing care, home with support services (H/W), home with no support services (H/WO), and those who died at the hospital after LA. We found age, amputation level, and APF play a significant role in determining discharge to all dispositions; gender was significantly associated with discharge to continuing care and H/WO; place of residence was associated with discharge to inpatient facilities, continuing care, and H/W; income was not associated with any DD other than H/W; surgical specialty was associated with discharge to all dispositions except death. The findings suggest that disparities in DD following LA exist even after eliminating the influence of payor source. Health care providers and policy makers should consider these findings in preparation for future needs.

Comorbidity and risk factors of subsequent lower extremity amputation in patients diagnosed with diabetes in Saskatchewan, Canada.

OBJECTIVE: Subsequent limb amputation (SLA) may be necessary due to disease progression, infection, or to aid prosthesis fit. SLA in Saskatchewan has increased 3.2% from 2006 to 2019 with minor SLA increasing 9.6% during that period. Diabetes affects a large proportion of patients who require SLA; however, the impact of additional comorbidities is not clear. METHODS: First-episode subsequent lower extremity limb amputation (SLEA) cases with the presence/absence of diabetes, other comorbidities, and demographic characteristics from 2006-2019 were retrieved from Saskatchewan's Discharge Abstract Database. Logistic regression was performed to examine the magnitude of the odds of SLEA. RESULTS: Among the 956 first-episode SLEA patients investigated, 78.8% were diagnosed with diabetes. Of these, 76.1% were male and 83.0% were aged 50 + years. Three comorbidities: renal failure (AOR = 1.9, 95% Cl 1.1 - 3.0), hypertension (AOR = 3.0, 95% Cl 2.0 - 4.5), and congestive heart failure (AOR = 2.0, 95% CI 1.2 - 3.2), conferred the highest odds of SLEA. The odds of SLEA is greatest for those aged 50-69 years, males, Registered Indians, and associated with a prolonged hospital stay. DISCUSSION: These data are important as they may help medical providers identify patients at the highest risk of SLEA and target interventions to optimize outcomes.

The impact of the demographic shift on limb amputation incidence in Saskatchewan, Canada, 2006-2019.

BACKGROUND: Changing demographics in a population may have an inevitable influence on disease incidence including limb amputation. However, the extent to which these changes affect limb amputation (LA) is unknown. Understanding the impact of changing demographics on LA would provide the best opportunity to plan for the future. We assessed the impact of changes in age and sex on limb amputation in Saskatchewan between 2006 and 2019. METHODS: Retrospective linked Saskatchewan's LA cases, and demographic characteristics and residents population from 2006-2019 was used. The amputation rate was calculated by dividing the total number of LA cases recorded each year by the annual Saskatchewan resident population and the results expressed per 100,000 populations. Furthermore, decomposition analysis was used to assess the impact of changes in age and sex on LA in a decade (2008-2017) and the Generalized Additive Model (GAM) was employed to examine the linear and non-linear effect of age. RESULTS: We found that in the ten years (2008-2017), the absolute LA rate difference was 9.0 per 100,000 population. Changes in age structure alone contributed 7.7% to the LA rate increase and 92.3% to changes in age-specific LA rates. The decade witnessed a marginal population difference between males and females, but the LA rate was 2.1-2.2 times higher in males than in females. The GAM revealed a non-linear relationship between LA and age, and further indicates that the risk of LA significantly increased as age increases. CONCLUSIONS: In a decade, we found that changes in age distribution and age-specific rate substantially impacted the increase in the LA rate observed in the province. This highlights the urgent need for strategized programs to respond to these changes as both the population and diabetes, which is age-dependent and a leading cause of LA, are expected to increase in the province by 2030. As changes in population and demographic factors are inevitable, this study provides data for policy makers on the need for continuous incorporation of the shift in population in the design of future health services.

Higher unemployment and higher work-related traumatic fatality: trends and associations from the Canadian province of Saskatchewan, 2007-2018.

OBJECTIVE: Although Saskatchewan appears to have the greatest burden of work-related fatality (WRF) in Canada, it is unclear how WRF rates have varied over time. We investigated the WRF rate in Saskatchewan over the past decade and modeled potential risk factors for WRF, including economic indicators. METHODS: In this cross-sectional, population-based study, Saskatchewan workplace traumatic fatalities grouped by year, season, and worker characteristics (eg, age, industry) were used in addition to Statistics Canada labor force survey total employment, total labor force, and the number of unemployed workers by year and season. WRF rates were calculated as fatalities per total number of employed workers. A Poisson generalized additive model was employed to examine the association between WRF rates and personal characteristics, and economic indicators. RESULTS: The rate remained fairly stable between 2013-2014 and 2015-2017 but sharply increased from 2017 to 2018. On average, the highest rate was observed among workers aged ≥60 years (0.70 ± 0.21 per 100 000). Men had a more than 13-fold greater risk of WRF than women [relative risk (RR)13.7, 95% confidence interval (CI) 10.48-17.9), with the highest RR of WRF observed in the construction industry (RR 9.2, 95% CI 6.1-13.8). The risk of mortality increased non-linearly with increasing unemployment rate, with instability as the unemployment rate reaches the highest modeled values. CONCLUSION: Workplace fatality in the province has fluctuated over the past decade, with differential impact observed among industry groups. Furthermore, an increase in the unemployment rate was followed by an increase in mortality risk. Prioritizing and encouraging prevention strategies during periods of economic recessions could help address the incidence of fatalities at work.

Trends of limb amputation considering type, level, sex and age in Saskatchewan, Canada 2006-2019: an in-depth assessment.

BACKGROUND: Most epidemiologic reports focus on lower extremity amputation (LEA) caused specifically by diabetes mellitus. However, narrowing scope disregards the impact of other causes and types of limb amputation (LA) diminishing the true incidence and societal burden. We explored the rates of LEA and upper extremity amputation (UEA) by level of amputation, sex and age over 14 years in Saskatchewan, Canada. METHODS: We calculated the differential impact of amputation type (LEA or UEA) and level (major or minor) of LA using retrospective linked hospital discharge data and demographic characteristics of all LA performed in Saskatchewan and resident population between 2006 and 2019. Rates were calculated from total yearly cases per yearly Saskatchewan resident population. Joinpoint regression was employed to quantify annual percentage change (APC) and average annual percent change (AAPC). Negative binomial regression was performed to determine if LA rates differed over time based on sex and age. RESULTS: Incidence of LEA (31.86 ± 2.85 per 100,000) predominated over UEA (5.84 ± 0.49 per 100,000) over the 14-year study period. The overall LEA rate did not change over the study period (AAPC -0.5 [95% CI - 3.8 to 3.0]) but fluctuations were identified. From 2008 to 2017 LEA rates increased (APC 3.15 [95% CI 1.1 to 5.2]) countered by two statistically insignificant periods of decline (2006-2008 and 2017-2019). From 2006 to 2019 the rate of minor LEA steadily increased (AAPC 3.9 [95% CI 2.4 to 5.4]) while major LEA decreased (AAPC -0.6 [95% CI - 2.1 to 5.4]). Fluctuations in the overall LEA rate nearly corresponded with fluctuations in major LEA with one period of rising rates from 2010 to 2017 (APC 4.2 [95% CI 0.9 to 7.6]) countered by two periods of decline 2006-2010 (APC -11.14 [95% CI - 16.4 to - 5.6]) and 2017-2019 (APC -19.49 [95% CI - 33.5 to - 2.5]). Overall UEA and minor UEA rates remained stable from 2006 to 2019 with too few major UEA performed for in-depth analysis. Males were twice as likely to undergo LA than females (RR = 2.2 [95% CI 1.99-2.51]) with no change in rate over the study period. Persons aged 50-74 years and 75+ years were respectively 5.9 (RR = 5.92 [95% Cl 5.39-6.51]) and 10.6 (RR = 10.58 [95% Cl 9.26-12.08]) times more likely to undergo LA than those aged 0-49 years. LA rate increased with increasing age over the study period. CONCLUSION: The rise in the rate of minor LEA with simultaneous decline in the rate of major LEA concomitant with the rise in age of patients experiencing LA may reflect a paradigm shift in the management of diseases that lead to LEA. Further, this shift may alter demand for orthotic versus prosthetic intervention. A more granular look into the data is warranted to determine if performing minor LA diminishes the need for major LA.

Predictors of prolonged hospitalization after vaginal birth in Ghana: A comparative study.

Early discharge after child delivery although indispensable, but maybe precluded by several factors. The effect of these factors on prolonged length of stay (LOS) after vaginal delivery has been sparsely investigated in Ghana. This limits understanding of potential leading indicators to inform intervention efforts and optimize health care delivery. This study examined factors associated with prolonged LOS after vaginal birth in two time-separated cohorts in Ghana. We analyzed data from Ghana's demographic and health surveys in 2007 and 2017. Our comparative analysis is based on subsamples in 2007 cohort (n = 2,486) and 2017 cohort (n = 8,065). A generalized estimating equation (GEE) with logistic regression was used to examine predictors of prolonged LOS after vaginal delivery. The cluster effect was accounted for using the exchangeable working correlation. The odds ratios (OR) and 95% confidence interval were reported. We found that 62.4% (1551) of the participants in 2007 had prolonged LOS after vaginal delivery, whereas the prevalence of LOS in the 2017 cohorts was 44.9% (3617). This constitutes a 17.5% decrease over the past decade investigated. Advanced maternal age (AOR = 1.24, 95% Cl 1.01-1.54), place of delivery (AOR = 1.18, 95% Cl 1.02-1.37), child's size below average (AOR = 1.14; 95% Cl 1.03-1.25), and problems suffered during/after delivery (AOR = 1.60; 95% Cl 1.43-1.80) were significantly associated with prolonged (≥ 24 hours) length of hospitalization after vaginal delivery in 2017. However, among variables that were available in 2007, only those who sought delivery assistance from non-health professionals (AOR = 1.89, 95% CI: 1.00-3.61) were significantly associated with prolonged LOS in the 2007 cohort. Our study provides suggestive evidence of a reduction in prolonged LOS between the two-time points. Despite the reduction observed, more intervention targeting the identified predictors of LOS is urgently needed to further reduce post-vaginal delivery hospital stay. Also, given that LOS is an important indicator of medical services use, an accurate understanding of its prevalence and associated predictors are useful in assessing the efficiency of hospital management practices and the quality of care of patients in Ghana.

Factors associated with prolonged post-operative acute care length of stay in limb amputation patients in Saskatchewan, Canada.

BACKGROUND: The effect of predisposing factors on post-operative acute care length of stay (POALOS) after lower extremity amputation (LEA) has been sparsely studied with reports largely focused on major (through/proximal to the ankle) LEA specifically due to diabetes mellitus (DM). Although valuable, the narrow focus disregards the impact of other causes and minor levels (distal to the ankle) of LEA. To address this gap, this study aimed to identify predisposing factors associated with prolonged POALOS after index LEA stratified by amputation level in Saskatchewan. METHODS: The study used Saskatchewan's provincial linked administrative health data and demographic factors between 2006 and 2019. Amputation levels, identified as major or minor, were derived from the amputation procedure codes. POALOS was calculated by subtracting patients' intervention date from discharge date, recorded in days, and categorized as short (< 7 days) or prolonged (> 7 days). Multivariable logistic regression was performed to identify predictors associated with prolonged POALOS. RESULTS: Of the 3123 LEA cases 1421 (45.5%) had prolonged POALOS. The median POALOS for the entire cohort was 7 days (IQR 3 to 16 days); 5 days (IQR 1 to 10 days) for minor LEA and 11 days (IQR 5 to 23 days) for major LEA. Predictors of prolonged POALOS after minor LEA were diabetes (AOR = 2.47, 95% CI: 1.87-3.27) and general surgeon (AOR = 1.52, 95% CI: 1.21-1.91). Minor LEA performed by orthopedic surgeons were half (AOR = 0.49, 95% CI: 0.35-0.70) as likely to experience prolonged POALOS. Predictors of prolonged POALOS after major LEA were diabetes (AOR = 1.34, 95% CI: 1.04-1.71), general surgeon (AOR = 1.91, 95% CI: 1.45-2.49), urban residence (AOR = 1.58, 95% CI: 1.25-1.99), Resident Indian (RI) status (AOR = 1.57, 95% CI: 1.15-2.15), and age with the likelihood of prolonged POALOS after LEA attenuating with increasing age: 35-54 years (AOR = 2.73, 95% CI: 1.56-4.76); 55-69 years (AOR = 2.65, 95% CI: 1.54-4.58); and 70+ years (AOR = 1.81, 95% CI: 1.05-3.11). CONCLUSION: This study identified only diabetes and surgical specialty predicted prolonged POALOS after both major and minor LEA in Saskatchewan while residence, RI status, and age were predictors of POALOS after major LEA. These findings shed light on the need for further research to identify confounding factors. It is not clear if general surgeons care for more unplanned, emergent cases with poor entry-level health while specialty surgeons perform more scheduled procedures.

The influence of primary and subsequent limb amputation on the overall rate of limb amputation in Saskatchewan, Canada, 2006-2019: a population-based study.

BACKGROUND: Understanding trends in limb amputation (LA) can provide insight into the prevention and optimization of health care delivery. We examine the influence of primary (first report) and subsequent (multiple reports) limb amputation on the overall (all reports) rate of limb amputation in Saskatchewan considering amputation level. METHODS: Hospital discharged data associated with LA from 2006 to 2019 and population estimates in Saskatchewan were used. LA cases were grouped based on overall, primary, and subsequent LA and further divided by level into major (through/above the ankle/wrist) and minor (below the ankle/wrist). Incidence rates were calculated using LA cases as the numerator and resident population as the denominator. Joinpoint and negative binomial were used to analyze the trends. In addition, the top three amputation predisposing factors (APF) were described by LA groups. RESULTS: The rate of overall LA and primary LA remained stable (AAPC - 0.9 [95% CI - 3.9 to 2.3]) and (AAPC -1.9 [95% CI -4.2 to 0.4]) respectively, while the rate of subsequent LA increased 3.2% (AAPC 3.2 [95% CI 3.1 to 9.9]) over the 14-year study period. The rate of overall major LA declined 4.6% (AAPC - 4.6 [95% CI -7.3 to -1.7]) and was largely driven by the 5.9% decline in the rate of primary major LA (AAPC - 5.9 [95% CI - 11.3 to -0.2]). Subsequent major LA remained stable over the study period (AAPC -0.4 [95% CI - 6.8 to 6.5]). In contrast, the overall rate of minor LA increased 2.0% (AAPC 2.0 [95% CI 1.0 to 2.9]) over the study period which was largely driven by a 9.6% increase in the rate of subsequent minor LA (AAPC 9.6 [95% CI 4.9 to 14.4]). Primary minor LA rates remained stable over the study period (AAPC 0.6 [95% CI - 0.2 to 1.5]). The study cohorts were 1.3-fold greater risk of minor LA than major LA. Diabetes mellitus (DM) was the leading APF representing 72.8% of the cohort followed by peripheral vascular disease (PVD) and trauma with 17.1 and 10.1% respectively. Most (86.7%) of subsequent LA were performed on people with DM. CONCLUSIONS: Overall LA rates remained stable over the study period with declining rates of major LA countered by rising rates of minor LA. Minor LA exceeded major LA with the largest rate increase identified in subsequent minor LA. Diabetes was the greatest APF for all LA groups. This rising rate of more frequent and repeated minor LA may reflect changing intervention strategies implemented to maintain limb function. The importance of long-term surveillance to understand rates of major and minor LA considering primary and subsequent intervention is an important step to evaluate and initiate prevention and limb loss management programs.

Incidence and trends of limb amputation in first nations and general population in Saskatchewan, 2006-2019.

BACKGROUND: There is conflicting evidence whether limb amputation (LA) disproportionately affects indigenous populations. To better understand this disparity, we compared the LA incidence rate between First Nations persons registered under the Indian Act of Canada (RI) and the general population (GP) in Saskatchewan. METHODS: We used Saskatchewan's retrospective administrative data containing hospital discharge LA cases, demographic characteristics (age and sex), and residents population reported in the database stratified by RI and GP from 2006-2019. The LA cases for each stratified group were first disaggregated into three broad categories: overall LA (all reported LA), primary LA (first reported LA), and subsequent LA (revision or contralateral LA), with each category further split into the level of amputation defined as major amputation (through/above the ankle/wrist joint) and minor amputation (below the ankle/wrist joint). LA rates were calculated using LA cases as the numerator and resident population as the denominator. Joinpoint and negative binomial regressions were performed to explore the trends further. RESULTS: Overall, there were 1347 RI and 4520 GP LA cases reported in Saskatchewan from 2006-2019. Primary LA made up approximately 64.5% (869) of RI and 74.5% (3369) of GP cases, while subsequent LA constituted 35.5% (478) of RI and 25.5% (1151) of GP cases. The average age-adjusted LA rate was 153.9 ± 17.3 per 100,000 in the RI cohort and 31.1 ± 2.3 per 100,000 in the GP cohort. Overall and primary LA rates for the GP Group declined 0.7% and 1.0%, while subsequent LA increased 0.1%. An increased LA rate for all categories (overall 4.9%, primary 5.1%, and subsequent 4.6%) was identified in the RI group. Overall, minor and major LA increased by 6.2% and 3.3%, respectively, in the RI group compared to a 0.8% rise in minor LA and a 6.3% decline in major LA in the GP group. RI females and males were 1.98-1.66 times higher risk of LA than their GP counterparts likewise, RI aged 0-49 years and 50+ years were 2.04-5.33 times higher risk of LA than their GP cohort. Diabetes mellitus (DM) was the most prevalent amputation predisposing factor in both groups with 81.5% of RI and 54.1% of GP diagnosed with DM. Also, the highest proportion of LA was found in the lowest income quintile for both groups (68.7% for RI and 45.3% for GP). CONCLUSION: Saskatchewan's indigenous individuals, specifically First Nations persons registered under the Indian Act of Canada, experience LA at a higher rate than the general population. This disparity exists for all variables examined, including overall, primary, and subsequent LA rates, level of amputation, sex, and age. Amplification of the disparities will continue if the rates of change maintain their current trajectories. These results underscore the need for a better understanding of underlying causes to develop a targeted intervention in these groups.

Leveraging best practices: protecting sub-Saharan African prison detainees amid COVID-19.

The risk of infection and death from COVID-19 is higher among older prisoners with pre-existing health conditions especially in sub-Saharan African. Hawks L et al. raise four concerns that need to be considered when developing public health and clinical responses to COVID-19 to protect prisoners. This paper applies these concerns to the sub-Saharan African context. These focus areas include 1) challenges of social distancing; 2) higher risk of severe infection and death; 3) difficulties health care systems may face in the case of COVID-19 surge; and 4) recommended solutions to prevent harm and preventing a public health catastrophe. Prisoners are more vulnerable and the time to take immediate actions to minimize an imminent COVID-19 outbreak and its impacts is now.

Tuberculosis in Canada and the United States: a review of trends from 1953 to 2015.

OBJECTIVES: To explore tuberculosis (TB) incidence in Canada and the United States from 1953 to 2015. In the most recent decade, the US incidence was lower than that of Canada. Since both countries are high income and have low TB incidence with similar TB surveillance programs, we hypothesized that rates should be similar. METHODS: TB incidence data from 1953 to 2015 were retrieved for both countries. Joinpoint regression was performed to identify change points in the trend, and direct standardization of US rates using Canadian ethnic population distribution was calculated. Adjusted rate and average annual percent change (AAPC) were estimated. RESULTS: Canada rates/100,000 were higher from 1953 to 1974 and similar from 1975 to 1985. This coincided with a change in US case definition in 1975. US rates were higher from 1986 to 1996. HIV/TB coinfection in the USA was 10.2% compared to that of Canada, 1.6%. Rates were similar from 1997 to 2004. Canada rates were again higher from 2005 to 2015. The Canada average AAPC rate in 1975-2015 was lower, - 2.9%, compared to that of the USA, - 4.1%. Foreign-born and Indigenous population proportions were 20.2% and 4.2% for Canada and 12.9% and 1.7% for the USA. The US rate adjusted to the Canada ethnic composition was 4.8 compared to the Canadian rate of 4.7. CONCLUSION: Case definition change and HIV coinfection contributed to the 1980 US rate increase. TB rates decreased in both countries from 1997, but more rapidly in the USA. The Canada proportion of foreign-born and Indigenous populations was higher. When US rates were standardized by Canada ethnic distribution, the national rates were similar. Further exploration of factors contributing to differences between these countries is needed.

Sleep duration and sleep disturbances in association with falls among the middle-aged and older adults in China: a population-based nationwide study.

BACKGROUND: Falls pose major health problems to the middle-aged and older adults and may potentially lead to various levels of injuries. Sleep duration and disturbances have been shown to be associated with falls in literature; however, studies of the joint and distinct effects of those sleep problems are still sparse. To fill this gap, we aimed to determine the association between sleep duration, sleep disturbances and falls among middle-aged and older adults in China controlling for psychosocial, lifestyle, socio-demographical factors and comorbidity. METHODS: Data were derived from the China Health and Retirement Longitudinal Study (CHARLS) based on multi-stage sampling designs, with respondents aged 50 and older. Associations were evaluated by using multiple logistic regression adjusting for confounders and complex survey design. To further determine if the association of sleep duration/disturbance and falls depends on age groups, the study data were divided into two samples (age 50-64 vs. age 65+) and comparison was made between the two age groups. RESULTS: Of the 12,759 respondents, 2172 (17%) had falls within the last 2 years. Our findings indicated that the participants who had nighttime sleep duration ≤5 were more likely to report falls than those who had nighttime sleep duration ≥6 h; whereas no association between nighttime sleep duration > 8 h and falls. Participants having sleep disturbances 1-2 days, or 3-4 days, and 5-7 days per week were also more likely to report falls than those who had no sleep disturbance. The nap sleep duration was not significantly associated with falls. Although the combined sample found both sleep duration and sleep disturbance to be strongly associated with falls after adjusting for various confounders, sleep disturbance was not significantly related to falls among participants aged 65 + . CONCLUSIONS: Our study suggested that there is an independent association between falls and short sleep duration and disturbed sleep among middle-aged and older adults in China. Findings underscore the need for evidence-based prevention and interventions targeting sleep duration and disturbance among this study population.

Investigating the Association Between Lower Extremity and Low Back Symptoms Among Saskatchewan Farmers Using the Standardized Nordic Questionnaire.

STUDY DESIGN: Cross-sectional survey. OBJECTIVE: The aim of this study was to investigate the association between self-reported low back symptoms and symptoms in the hip, knee, and ankle in a high-risk occupational group. SUMMARY OF BACKGROUND DATA: Low back pain, with or without lower extremity referral, poses a major challenge to occupational productivity, especially in farming. Although low back symptoms can occur independent of lower extremity symptoms, anatomical positioning of nerves supplying the lower limbs means structural and physiological changes in the spine can lead to referred pain in the lower limbs, but the magnitude of the association between low back and lower extremity symptoms is unclear. METHODS: Baseline postal questionnaire data from the Saskatchewan Farm Injury Cohort Study yielded surveys from 2653 adults from 1020 farms, who responded to Standardized Nordic Questionnaire (SNQ) items on "ache, pain, discomfort" in nine body parts during the last 12 months. Bivariate and multivariate regression modeling was performed with low back symptoms as the outcome and lower extremity symptoms as the independent variable. RESULTS: After adjustment for age, sex, depression, and heavy lifting, low back symptom was significantly related with hip pain (odds ratio [OR] = 3.84, 95% confidence interval [CI] 3.04-4.84), knee pain (OR = 1.84, 95% CI 1.49-2.28), and ankle pain (OR = 1.79, 95% CI 1.40-2.29). Results showed a significant but decreasing relationship to low back symptoms as sites became more distal. CONCLUSION: Hip and low back symptoms are highly associated, suggesting a common mechanism may be at work. Although there appears be increased risk of knee and ankle region symptoms among those with back pain, the SNQ is not designed to differentiate types of referred symptoms (i.e., numbness, tingling, shooting pain) and/or clinical diagnoses. Other tools, possibly corroborated with clinical examination findings, are likely necessary for a more thorough investigation of referred pain patterns in this high-risk occupational group. LEVEL OF EVIDENCE: 3.

Association Between Farm Machinery Operation and Low Back Disorder in Farmers: A Retrospective Cohort Study.

OBJECTIVE: The association between whole body vibration (WBV) as measured by annual accumulated use of all-terrain vehicles (ATV)/combine/tractor operation and low back disorders (LBDs) among farmers was investigated. METHODS: Saskatchewan Farm Injury Cohort Study data was used. Baseline data were collected in 2007 on the three vehicle types and other factors. Follow-up data on LBD symptoms were collected during 2013 resulting in 1149 samples. RESULTS: Adjusted for age, education, and gender, LBDs were associated with tractor operation for 1 to 150 hours/year (Relative Risk [RR] = 1.23, 95%CI 1.05 to 1.44), 151 to 400 hours/year (RR = 1.32, 95%CI 114 to 1.54) and 401+ hours/year (RR = 1.34, 95%CI 1.15 to 1.56). Additionally, hip symptoms were associated with tractor operation. Only unadjusted associations were found in combine and ATV operation. CONCLUSIONS: Duration of tractor operation and older age are important predictors of both low back and hip symptoms in farmers.