Childhood obesity in the ED: A prospective Australian study.

OBJECTIVE: To determine (i) the prevalence of overweight and obesity among children presenting to all EDs in a large regional Australian city and (ii) whether age, sex, socioeconomic status (SES) or hospital setting (public vs private) were associated with overweight and obesity. METHODS: This prospective observational study included children aged ≥2 and <18 years who presented to any of three EDs over an 18 month period who had their height and weight measured. Age, sex and residential postcode were collected. Weight category was determined by sex and age standardised body mass index (BMI) z-score. Weight category was assessed by sex, age, SES and hospital setting with chi-squared tests, and ordinal logistic regression with cluster sandwich error estimators. Results were reported using odds ratios (OR) with 95% confidence intervals (CI). RESULTS: Data were collected for 3827 children, of which 11.6% were obese and 19.8% overweight. The prevalence of obesity was highest in those aged 8-14 years and in those from lower SES postcodes. The likelihood of obesity was higher in the public than the private hospitals (OR 0.66, 95% CI 0.51-0.86), whereas the likelihood of overweight was similar (OR 1.00, 95% CI 0.83-1.22). CONCLUSIONS: Almost one-third of children who presented to EDs were overweight or obese. Obesity was particularly high in those aged 8-14 years and those from lower SES postcodes. In the evolving obesity crisis, the high proportion of children presenting to EDs above a healthy weight might represent an opportunity for EDs to identify and refer children for body weight and lifestyle management.

Psychometric properties of the Perceived Stress Scale (PSS-10) in silica-exposed workers from diverse cultural and linguistic backgrounds.

BACKGROUND: The Perceived Stress Scale (PSS-10) has been used in a range of occupational cohorts, but only recently in stone benchtop workers undergoing screening for silicosis. The aim of this study was to compare psychometric properties of the PSS-10 in stone benchtop workers amongst those born overseas or who used an interpreter. METHODS: Stone benchtop workers in Melbourne, Australia completed the PSS-10 as part of their occupational screening for silicosis. Internal consistency was assessed with Cronbach's α for the total score and the positive and negative subscales. Validity was assessed using confirmatory factor analysis (CFA). Analysis was performed for the total group and for subgroups according to sex, interpreter use, overseas-born, and language spoken at home. RESULTS: The results of 682 workers with complete PSS-10 scores were included in analysis. Most participants were male (93%), with mean age 36.9 years (SD 11.4), with just over half (51.6%) born in Australia, 10.1% using an interpreter, and 17.5% using a language other than English at home. Cronbach's α for the overall group (α = 0.878) suggested good internal consistency. DISCUSSION: CFA analysis for validity testing suggested PSS-10 performance was good for both sexes, moderate for country of birth and language spoken at home categories, but poorer for those who used an interpreter. Whilst professional interpreters provide a range of benefits in the clinical setting, the use of translated and validated instruments are important, particularly in cohorts with large numbers of migrant workers. CONCLUSION: This study describes the psychometric properties of the PSS-10 in a population of stone benchtop workers, with good internal consistency, and mixed performance from validity testing across various subgroups.

Therapist competence, homework engagement, and client characteristics in CBT for youth depression: A study of mediation and moderation in a community-based trial.

OBJECTIVE: Prior studies of Cognitive Behavioral Therapy (CBT) have focused on the quantity and quality of clients' homework completion and only rarely have considered the role of therapist competence. METHODS: The present study examined (a) therapist competence across the entire process of integrating homework into CBT, including the review, design, and planning of tasks; (b) homework engagement, including client appraisals of the difficulty and obstacles encountered in task completion using the Homework Rating Scale - Revised (HRS-II); (c) pre-post symptom reduction as the index of outcome; and (d) considered client factors such as suicide risk in a community-based trial for adolescent depression. Trained independent observers assessed therapist competence and engagement with homework at two consecutive sessions of CBT for N = 80 young people (Mage = 19.61, SD = 2.60). RESULTS: Significant complementary mediation effects were obtained; there was an indirect mediation effect of HRS-II Beliefs (b = 1.03, SE B = 0.42, 95% BCa CI [0.35, 2.03]) and HRS-II Perceived Consequences on the Competence-Engagement relationship (b = 0.85, SE B = 0.31, 95% BCa CI [0.39, 1.61]). High levels of suicidal ideation were also shown to moderate this relationship. CONCLUSIONS: The present findings contribute to the growing body of CBT process research designed to examine the complex interrelationships of client and therapist variables, in a manner that reflects the actual process of therapy, and advances beyond studies of isolated predictors of symptom change.

Cost-effectiveness of screening for primary aldosteronism in hypertensive patients in Australia: a Markov modelling analysis.

BACKGROUND: Primary aldosteronism affects 3-14% of hypertensive patients in the primary care setting and up to 30% in the hypertensive referral units. Although primary aldosteronism screening is recommended in patients with treatment-resistant hypertension, diagnosis at an earlier stage of disease may prevent end-organ damage and optimize patient outcomes. METHODS: A Markov model was used to estimate the cost-effectiveness of screening for primary aldosteronism in treatment and disease (cardiovascular disease and stroke) naive hypertensive patients. Within the model, a 40-year-old patient with hypertension went through either the screened or the unscreened arm of the model. They were followed until age 80 or death. In the screening arm, the patient underwent standard diagnostic testing for primary aldosteronism if the screening test, aldosterone-to-renin ratio, was elevated above 70 pmol/l : mU/l. Diagnostic accuracies, transition probabilities and costs were derived from published literature and expert advice. The main outcome of interest was the incremental cost effectiveness ratio (ICER). RESULTS: Screening hypertensive patients for primary aldosteronism compared with not screening attained an ICER of AU$35 950.44 per quality-adjusted life year (QALY) gained. The results were robust to different sensitivity analyses. Probabilistic sensitivity analysis demonstrated that in 73% of the cases, it was cost-effective to screen at the commonly adopted willingness-to-pay (WTP) threshold of AU$50 000. CONCLUSION: The results from this study demonstrated that screening all hypertensive patients for primary aldosteronism from age 40 is cost-effective. The findings argue in favour of screening for primary aldosteronism before the development of severe hypertension in the Australian healthcare setting.

Prevalence and risk factors for silicosis among a large cohort of stone benchtop industry workers.

OBJECTIVES: High silica content artificial stone has been found to be associated with silicosis among stone benchtop industry (SBI) workers. The objectives of this study were to determine the prevalence of and risk factors for silicosis among a large cohort of screened SBI workers, and determine the reliability of respiratory function testing (RFT) and chest x-ray (CXR) as screening tests in this industry. METHODS: Subjects were recruited from a health screening programme available to all SBI workers in Victoria, Australia. Workers undertook primary screening, including an International Labour Office (ILO) classified CXR, and subject to prespecified criteria, also underwent secondary screening including high-resolution CT (HRCT) chest and respiratory physician assessment. RESULTS: Among 544 SBI workers screened, 95% worked with artificial stone and 86.2% were exposed to dry processing of stone. Seventy-six per cent (414) required secondary screening, among whom 117 (28.2%) were diagnosed with silicosis (median age at diagnosis 42.1 years (IQR 34.8-49.7)), and all were male. In secondary screening, silicosis was associated with longer SBI career duration (12 vs 8 years), older age, lower body mass index and smoking. In those with silicosis, forced vital capacity was below the lower limit of normal in only 14% and diffusion capacity for carbon monoxide in 13%. Thirty-six (39.6%) of those with simple silicosis on chest HRCT had an ILO category 0 CXR. CONCLUSION: Screening this large cohort of SBI workers identified exposure to dry processing of stone was common and the prevalence of silicosis was high. Compared with HRCT chest, CXR and RFTs had limited value in screening this high-risk population.

Failure to Rescue in Major Abdominal Surgery: A Regional Australian Experience.

BACKGROUND: Failure to rescue (FTR) is increasingly recognised as a measure of the quality care provided by a health service in recognising and responding to patient deterioration. We report the association between a patient's pre-operative status and FTR following major abdominal surgery. METHODS: A retrospective chart review was conducted on patients who underwent major abdominal surgery and who suffered Clavien-Dindo (CDC) III-V complications at the University Hospital Geelong between 2012 and 2019. For each patient suffering a major complication, pre-operative risk factors including demographics, comorbidities (Charlson Comorbidity Index (CCI)), American Society of Anaesthesiology (ASA) Score and biochemistry were compared for patients who survived and patients who died. Statistical analysis utilised logistic regression with results reported as odds ratios (ORs) and 95% confidence intervals (CIs). RESULTS: There were 2579 patients who underwent major abdominal surgery, of whom 374 (14.5%) suffered CDC III-V complications. Eighty-eight patients subsequently died from their complication representing a 23.5% FTR and an overall operative mortality of 3.4%. Pre-operative risk factors for FTR included ASA score ≥ 3, CCI ≥ 3 and pre-operative serum albumin of < 35 g/L. Operative risk factors included emergency surgery, cancer surgery, greater than 500 ml intraoperative blood loss and need for ICU admission. Patients who suffered end-organ failure were more likely to die from their complication. CONCLUSION: Identification of patients at high risk of FTR should they develop a complication would inform shared decision-making, highlight the need for optimisation prior to surgery, or in some cases, result in surgery not being undertaken.

A quantitative analysis of spectral computed tomography characteristics of osseous metastases.

INTRODUCTION: Spectral detector computed tomography (SDCT) is a recent advancement that enables elemental material decomposition which could improve the detection of osseous metastases in the oncologic patient. METHODS: Sixteen patients who underwent oncologic staging SDCT as well as WBBS with Technetium-99 m hydroxydiphosphonate (Tc99m HDP) were included in this retrospective study. A total of 50 osseous metastases were identified and confirmed on bone scintigraphy. Quantitative ROI-based measurements of each lesion and a similar region of normal bone were performed, and the acquired spectral data were used for comparison. These parameters included effective atomic number (Zeff ), electron density (%EDW) and calcium suppression (HU). Receiver operating characteristic (ROC) analysis was performed. RESULTS: In comparison to normal bone, osseous metastases showed statistically significantly elevated values in effective atomic number, electron density and calcium suppression. ROC analysis demonstrated outstanding discrimination with area under the curve (AUC) values of 0.934 and 0.915 for effective atomic number and electron density, and excellent discrimination with an AUC value of 0.884 for calcium suppression. Threshold values of effective atomic number (Zeff ) >9.7, electron density >115% EDW and calcium suppression values >0 HU were demonstrated to be able to differentiate an osseous lesion from normal bone with a sensitivity of 82%, 82% and 84% and a specificity of 86%, 92% and 88% respectively. CONCLUSION: Spectral analysis of osseous metastases demonstrated significantly elevated values in effective atomic number, electron density and calcium suppression as compared to normal bone which would be useful adjunct quantitative parameters in CT imaging to increase diagnostic confidence.

Long-term renal outcome post-multimodal computed tomography in stroke evaluation.

Recent studies have demonstrated the risk of contrast-associated acute kidney injury (CA-AKI) is low post-multimodal computed tomography (MMCT) in the evaluation of acute stroke. We provide a complementary study with long-term renal follow up. A retrospective analysis was performed on all suspected strokes from January 2019 to June 2020 for those who had undergone computed tomography angiography, computed tomography perfusion or both. We identified 776 cases, of which 538 were excluded. The incidence of CA-AKI was 7.6% (n/N = 18/238; 95% confidence interval = 4.2-11.0). All CA-AKI cases had renal confounders. No AKI at >30 days was found in 60.5% (n = 144) of all cases studied. The long-term renal outcome post-MMCT in stroke evaluation is favourable at >30 days.

Patient-specific Implants for Orbital Fractures: A Systematic Review.

PURPOSE: Orbital fractures are common facial fractures that can be challenging to repair and require careful attention to avoid unacceptable ophthalmic complications. Customized implants that are unique to an individual patient, or patient-specific implants (PSIs), have been increasingly used to repair orbital wall fractures. This systematic review summarizes the current evidence regarding custom-made orbital wall implants. METHODS: A keyword search of published literature from January 2010 to September 2021 was performed using Ovid MEDLINE, PubMed, and the Cochrane Library databases. Original articles that included more than 3 human subjects with an orbital fracture repaired with a PSI were included. The search results were reviewed, duplicates were removed and relevant articles were included for analysis. RESULTS: Fifteen articles meeting the inclusion criteria. The articles were categorized into 3 separate groups based on the method of PSI fabrication: manual molding of a PSI on a 3D-printed orbital model (53%), directly from a 3D printer (27%), or via a template fabricated from a 3D printer (20%). Three primary postoperative outcomes were assessed: rates of diplopia, enophthalmos, and orbital volume. Postoperative rates of diplopia and enophthalmos improved regardless of the PSI technique, and postoperative orbital volumes were reduced compared with their preoperative state. When PSIs were compared to conventional implants, patient outcomes were comparable. CONCLUSIONS: This review of existing PSI orbital implant literature highlights that while PSI can accurately and safely repair orbital fractures, patient outcomes are largely comparable to orbital fractures repaired by conventional methods, and PSI do not offer a definitive benefit over conventional implants.

Cracked open: exploring attitudes on access to egg freezing.

Egg freezing (EF) technology has improved significantly over the last decade, giving women more choice over their reproductive futures. Despite this advance, EF brings forth contentious ethical and regulatory issues. Policies controlling access to EF vary around the world and there is a lack of consensus about who should have access and what criteria are relevant in making these decisions. This study aimed to identify views of women about access to EF for both "medical" and "non-medical" risks to infertility. An online survey was administered to women aged between 18 and 60 years in Victoria, Australia between April and May 2018. A total of 1,066 individuals initiated the survey. The median age of the participants was 28 years and 81% were <40 years old. Almost all participants (98%) supported access to medical EF in situations where treatments (e.g. chemotherapy) or illnesses threaten fertility. Support for access to EF for non-medical indications was lower; 75% supported EF for "lack of suitable partner", followed by "financial insecurity to raise a child" (72%) and "career/educational advancement" (65%). Older respondents (aged ≥40 years) were less likely than their younger counterparts to support all indications for non-medical EF. Our findings indicate broad support for EF. However, the variation in support between indications for non-medical EF suggests that individuals do not think about access to EF simply in terms of medical necessity. To reflect public views, future policy may need to consider access to EF beyond the medical/non-medical distinction.

The development and validation of instruments to measure dignity-protective continence care for care-dependent older people in residential aged care facilities: A study protocol.

AIMS: To develop and validate two instruments to measure dignity-protective continence care for care-dependent older people in residential aged care facilities: one instrument to be completed by care recipients and another for healthcare professionals. METHODS: The first phase of the project will involve a review of literature to identify the attributes of "dignity-protective continence care" for older people, which will be used to design the initial drafts of the instruments. Thereafter the Delphi survey technique will be used to establish the face and content validity of the draft instruments with three purposive samples; (a) care recipients (care-dependent older people with decisional capacity), (b) formal carers (nurses and personal care workers from residential aged care facilities, and (c) healthcare professionals with gerontological expertize in the management of incontinence. After instrument development, a large cross-sectional survey of care recipients and formal carers will be conducted to establish the internal consistency and construct validity of the instruments. This will be followed by a series of tests to establish their test-retest reliability. CONCLUSION: The completed research will result in two reliable and valid instruments that will support broader efforts to ensure that care practices in residential aged care facilities do not violate the dignity of care-dependent older people with continence care needs, and allow care partners and providers to act upon the results.

Brain magnetic resonance imaging is a predictor of bimanual performance and executive function in children with unilateral cerebral palsy.

AIM: To examine the association between brain magnetic resonance imaging (MRI) characteristics and executive function and bimanual performance in children with unilateral cerebral palsy (CP). METHOD: Clinical MRI brain scans were classified as: (1) predominant pathological pattern (normal, white matter injury [WMI]; grey matter injury; focal vascular insults [FVI]; malformations; or miscellaneous); and (2) focal lesions (frontal, basal ganglia, and/or thalamus). Assessments included: (1) bimanual performance; (2) unimanual dexterity; and (3) executive function tasks (information processing, attention control, cognitive flexibility, and goal setting) and behavioural ratings (parent). RESULTS: From 131 recruited children, 60 were ineligible for analysis, leaving 71 children (47 males, 24 females) in the final sample (mean age 9y [SD 2y], 6y-12y 8mo). Brain MRIs were WMI (69%) and FVI (31%); and frontal (59%), thalamic (45%), basal ganglia (37%), and basal ganglia plus thalamic (21%). Bimanual performance was lower in FVI versus WMI (p<0.003), and with frontal (p=0.36), basal ganglia (p=0.032), and thalamic/basal ganglia lesions (p=0.013). Other than information processing, executive function tasks were not associated with predominant pattern. Frontal lesions predicted attention control (p=0.049) and cognitive flexibility (p=0.009) but not goal setting, information processing, or behavioural ratings. INTERPRETATION: Clinical brain MRI predicts cognitive and motor outcomes when focal lesions and predominate lesion patterns are considered. What this paper adds Early brain magnetic resonance imaging (MRI) predicts bimanual performance and cognitive outcomes. Brain MRI may identify children requiring targeted interventions. Basal ganglia with/without thalamic lesions predicted bimanual performance. Frontal lesions were associated with attention control and cognitive flexibility. Brain MRI predominant patterns predicted motor, not cognitive outcomes, other than information processing.

La resonancia magnética cerebral es un predictor del rendimiento bimanual y la función ejecutiva en niños con parálisis cerebral unilateral OBJETIVO: Examinar la asociación entre las características de la resonancia magnética cerebral (RMN) y la función ejecutiva y el rendimiento bimanual en niños con parálisis cerebral unilateral (PC). MÉTODO: Los escáneres cerebrales de resonancia magnética clínica se clasificaron como: (1) patrón patológico predominante (normal, lesión de la sustancia blanca [WMI]; lesión de la materia gris; lesiones vasculares focales [FVI]; malformaciones; o varios); y (2) lesiones focales (ganglios frontales, basales y / o tálamo). Las evaluaciones incluyeron: (1) desempeño bimanual; (2) destreza unimanual; y (3) tareas de funciones ejecutivas (procesamiento de información, control de atención, flexibilidad cognitiva y fijación de objetivos) y calificaciones de comportamiento (padres). RESULTADOS: De 131 niños reclutados, 60 no fueron elegibles para el análisis, dejando 71 niños (47 varones, 24 mujeres) en la muestra final (edad media 9 años [DE 2 años], 6 años - 12 años 8 meses). Las RMN cerebrales fueron WMI (69%) y FVI (31%); y frontal (59%), talámico (45%), ganglios basales (37%) y ganglios basales más talámico (21%). El rendimiento bimanual fue menor en FVI versus WMI (p <0,003), y con lesiones frontales (p = 0,36), ganglios basales (p = 0,032) y talámicas / ganglios basales (p = 0,013). Aparte del procesamiento de la información, las tareas de la función ejecutiva no se asociaron con el patrón predominante. Las lesiones frontales predijeron el control de la atención (p = 0,049) y la flexibilidad cognitiva (p = 0,009) pero no el establecimiento de objetivos, el procesamiento de la información o las clasificaciones de comportamiento. INTERPRETACIÓN: La resonancia magnética cerebral clínica predice los resultados cognitivos y motores cuando se consideran las lesiones focales y los patrones de lesiones predominantes.

Imagem por ressonância magnética do cérebro como preditora do desempenho bimanual e função executiva de crianças com paralisia cerebral unilateral OBJETIVO: Examinar a associação entre as características do exame de imagem por ressonância magnética (IRM) e a função executiva e desempenho bimanual em crianças com paralisia cerebral (PC) unilateral. MÉTODO: Escaneamentos clínicos de IRM cerebrais foram classificados como: 1) padrão patológico predominante (normal, lesão da substância branca [LSB]; lesão da substância cinzenta; insultos vasculares focais [IVF]; malformações; ou outro); e (2) lesões focais (frontal, gânglios basais, e/ou tálamo). As avaliações incluíram: (1) desempenho bimanual; (2) destreza unimanual; e (3) tarefas de função executiva (processamento de informações, controle da atenção, flexibilidade cognitiva, e estabelecimento de metas) e pontuações comportamentais (pais). RESULTADOS: De 131 crianças recrutadas, 60 eram inelegíveis para análise, restando 71 crianças (47 do sexo masculino, 24 do sexo feminino) na amostra final (média de idade 9a [DP 2a], 6a-12a 8m). IRMs cerebrais eram do tipo LSB (69%) e IVFs (31%); e frontais (59%), talâmicas (45%), de gânglios da base (37%), e de gânglios da base mais talâmicas (21%). O desempenho bimanual foi menor em IVF versus LSB (p<0,003), e com lesões frontais (p=0,36), gânglios da base (p=0,032), e talâmicas/gânglios da base (p=0,013). Com exceção do processamento de informações, as tarefas da função executiva não foram associadas com o padrão predominante. Lesões frontais foram preditivas do controle da atenção (p=0,049) e flexibilidade cognitiva (p=,.009) mas não do estabelecimento de metas, processamento de informações, e pontuações comportamentais. INTERPRETAÇÃO: A IRM cerebral clínica prediz resultados cognitivos e motores quando lesões focais e padrões predominantes de lesão são considerados.

Saline suppression test parameters may predict bilateral subtypes of primary aldosteronism.

BACKGROUND: The saline suppression test (SST) serves to confirm the diagnosis of primary aldosteronism (PA) whilst adrenal vein sampling (AVS) is used to determine whether the aldosterone hypersecretion is unilateral or bilateral. An accurate prediction of bilateral PA based on SST results could reduce the need for AVS. AIM: We sought to identify SST parameters that reliably predict bilateral PA. METHODS: The results from 121 patients undergoing SSTs at Monash Health from January 2010 to January 2018 including screening blood tests, imaging, AVS and histopathology results were evaluated. Patients were subtyped into unilateral or bilateral PA based on AVS and surgical outcomes. RESULTS: Of 113 patients with confirmed PA, 33 had unilateral disease whilst 42 had bilateral disease. In those with bilateral disease, plasma aldosterone concentration (PAC) was significantly lower post-SST, together with a significant fall in the aldosterone-renin ratio (ARR). The combination of PAC < 300 pmol/L and a reduction in ARR post-SST provided 96.8% specificity in predicting bilateral disease. Eighteen of 39 patients (49%) with bilateral PA could have avoided AVS using these criteria. CONCLUSION: A combination of PAC < 300 pmol/L and a lower ARR post-SST could reliably predict bilateral PA. An independent cohort will be needed to validate these findings.

The role of body composition in diverticular disease.

BACKGROUND: Diverticular disease is a common, chronic inflammatory disease of the bowel. This study investigates the differences in body composition between patients with diverticular disease and those without. METHODS: Appropriate patients were identified using a search of the radiology database. Demographic and disease information was gathered using scanned medical records. Body composition analysis was performed at level L3 using single-slice computed tomography techniques. RESULTS: Two hundred seventy-one patients were included in this study: 83 controls, 93 with diverticulosis and 95 with diverticulitis. Diverticulitis and diverticulosis were associated with a significantly higher visceral fat area (VFA), than the control group (p < 0.001, p < 0.001). Diverticulitis and diverticulosis were associated with a significantly higher visceral fat area to subcutaneous fat area ratio (VFA:SCFA), than the control group (p = 0.005, p = 0.019). Only diverticulosis was associated with increased levels of extramyocellular fat, when compared to the control group (p = 0.001). CONCLUSION: Diverticular disease is associated with a higher amount and a higher proportion of visceral fat than seen in controls without diverticular disease.

Interventions designed to reduce excessive gestational weight gain can reduce the incidence of gestational diabetes mellitus: A systematic review and meta-analysis of randomised controlled trials.

AIMS: To (i) evaluate the global impact of interventions designed to prevent excessive gestational weight gain (eGWG) on the incidence of gestational diabetes (GDM), and (ii) examine whether the effects differ by pre-conception body mass index (BMI) or ethnicity. METHODS: A systematic search of randomised controlled trials (RCTs) with a primary or secondary aim to reduce eGWG was conducted in seven international and three Chinese databases without date limits. Meta-analysis data are reported as relative risk (RR) for GDM incidence for interventions including: diet, physical activity (PA), and lifestyle (diet and PA). RESULTS: Forty-five studies were included, 37 in the meta-analyses. Diet and PA interventions reduced GDM risk by 44% (RR: 0.56, 95% CI: 0.36-0.87) and 38% (RR: 0.62, 95% CI: 0.50-0.78), respectively. Lifestyle interventions and BMI didn't significantly alter GDM risk. PA interventions from Southern-Europe reduced GDM risk by 37% (RR: 0.63, 95% CI: 0.50-0.80). Whereas, diet and lifestyle interventions conducted in Asia reduced GDM risk by 62% (RR: 0.38, 95% CI: 0.24-0.59) and 32% (RR: 0.68, 95% CI: 0.54-0.86), respectively. CONCLUSION: Diet and PA interventions designed to reduce GWG are more effective than standard care in reducing the incidence of GDM, although the effect varies by region and BMI. The 'one size fits all' approach is not supported.

Cancer incidence, mortality, and blood lead levels among workers exposed to inorganic lead.

PURPOSE: We aimed to measure mortality and cancer incidence in a cohort of lead-exposed workers by using blood lead levels to assess exposure. METHODS: The cohort comprised male lead workers. Subjects were matched to cancer and death registries. Observed death and cancer incidence rates were compared with population rates to obtain standardized mortality ratios (SMR) and standardized incidence ratios (SIR). RESULTS: There were 4114 male subjects with average follow-up time of 16.2 years, and 406 deaths were observed. There were significant results for overall death (SMR, 111; 95% confidence interval [95% CI], 101-123), digestive system deaths (SMR, 167; 95% CI, 110-250), and deaths from external causes (SMR, 135; 95% CI, 105-174). A total of 228 subjects had cancer, with an overall SIR of 83 (95% CI, 73-95); liver cancer SIR of 217 (95% CI, 103-454) and esophageal cancer SIR of 240 (95% CI, 129-447). The latter was seven-fold greater (SIR 755; 95% CI, 314-1813) among those with a blood lead level result above 30 µg/dL compared with population rates. No other increases in cancers were observed. CONCLUSIONS: Overall mortality was elevated. Although incidence rates of overall cancer were low, further studies and analysis are required to investigate any biologically plausible associations between inorganic lead and liver or esophageal cancer.