Abstract Background Aboriginal infants have poorer birth outcomes than non-Aboriginal infants. Harmful use of tobacco, alcohol, and other substances is higher among Aboriginal women, as is violence, due to factors such as intergenerational trauma and poverty. We estimated the proportion of small for gestational age (SGA) births, preterm births, and perinatal deaths that could be attributed to these risks. Methods Birth, hospital, mental health, and death records for Aboriginal singleton infants born in Western Australia from 1998-2010 and their parents were linked. Using logistic regression with a generalized estimating equation approach, associations with birth outcomes and population attributable fractions were estimated after adjusting for demographic factors and maternal health during pregnancy. Results Of 28,119 births, 16% of infants were SGA, 13% were preterm, and 2% died perinatally. 51% of infants were exposed in utero to at least one of the risk factors and the fractions attributable to them were 37% (SGA), 16% (preterm) and 20% (perinatal death). Conclusions A large proportion of adverse outcomes were attributable to the modifiable risk factors of substance use and assault. Significant improvements in Aboriginal perinatal health are likely to follow reductions in these risk factors. These results highlight the importance of identifying and implementing risk reduction measures which are effective in, and supported by, Aboriginal women, families, and communities.
OBJECTIVES. This study reports an efficacy trial of four work-site health promotion programs. It was predicted that strategies making use of behavioral counseling would produce a greater reduction in cardiovascular disease risk factors than screening and educational strategies. METHODS. Twenty-eight work sites were randomly allocated to a health risk assessment, risk factor education, behavioral counseling, or behavioral counseling plus incentives intervention. Participants were assessed before the intervention and at 3, 6, and 12 months. RESULTS. Compared with the average of the health risk assessment and risk factor education conditions, there were significantly higher validated continuous smoking cessation rates and smaller increases in body mass index and estimated percentage of body fat in the two behavioral counseling conditions. The behavioral counseling condition was associated with a greater reduction in mean blood pressure than was the behavioral counseling plus incentives condition. On average among all groups, there was a short-term increase in aerobic capacity followed by a return to baseline levels. CONCLUSIONS. Work-site interventions that use behavioral approaches can produce lasting changes in some cardiovascular risk factors and, if implemented routinely, can have a significant public health impact.
Background. Chemotherapy can cause a range of side effects including nausea, vomiting, diarrhea, and infection, which can have a significant impact on an individual’s quality of life. Survival outcomes can be impacted when side effects are poorly managed, leading to failure to complete the defined dose of treatment. Objective. This study presents clinicians’ experiences with a shared care model involving home-based community nurse (CN) support to improve side-effect management of individuals receiving chemotherapy as an outpatient. Methods. A qualitative study was conducted with CNs, cancer nurses, medical oncologists, and a general practitioner involved in the CN intervention delivered as part of a randomized controlled trial (RCT) aimed at reducing unplanned presentations to hospital of cancer patients receiving outpatient chemotherapy. Semistructured individual and focus group interviews were conducted. Key themes were identified using thematic analysis. Findings. Twenty-three healthcare professionals were interviewed. Three themes were identified: (1) being able to enhance patient-centered care and clinical practice during chemotherapy; (2) importance of effective communication and collaborative relationships between different care settings; and (3) ways to adapt the intervention for implementation in routine clinical practice. Participants reported that it was feasible for CNs to care for this patient group, and their home visits enabled preemptive symptom management. Suggestions to improve and modify the intervention to implement this care model within existing clinical care included a flexible approach, such as a blended delivery with face-to-face visits and telephone calls; a risk- or needs-based approach to prioritize patient groups more likely to benefit from the intervention; and sharing of electronic medical records for more effective collaboration and communication. Conclusions. A CN-delivered shared care model provided a feasible approach to the provision of individualized support for outpatients receiving chemotherapy. This study suggests ways to adapt this care model into existing clinical workflow and structures. This trial is registered with ACTRN12614001113640.
This study examines the influence of work-up on the accuracy of diagnostic mammography in symptomatic women. Subjects were sampled from all women consecutively attending a symptomatic breast clinic and aged 25-55 years (240 women shown to have breast cancer and 240 age-matched women shown not to have cancer). Mammography films were prospectively reported by two radiologists independently of each other and in a blinded manner using two phases of film reading: initially only baseline films were read, then mammography was re-read with work-up films. The accuracy of reporting mammography with and without work-up was compared using sensitivity and specificity, likelihood ratios, and receiver operating characteristic (ROC) curves. Reporting the mammogram with work-up (compared to without any work-up films) improved sensitivity (75.3% vs 69.0%, P=0.059) for one radiologist, with a non-significant gain in specificity (84.5% vs 79.4%, P=0.38). For the other radiologist, it resulted in a non-significant decrease in sensitivity (79.5% vs 83.7%, P=0.14) with a significant increase in specificity (85.6% vs 61.9%, P=0.00001). ROC curves for both radiologists showed that reporting mammography with work-up resulted in significant improvement (4.5% for R1, 6.8% for R2) in overall test accuracy. Our findings support the use of work-up mammography in the diagnostic setting.
OBJECTIVES. This methodological review aims to determine the extent to which design and analysis aspects of cluster randomization have been appropriately dealt with in reports of primary prevention trials. METHODS. All reports of primary prevention trials using cluster randomization that were published from 1990 to 1993 in the American Journal of Public Health and Preventive Medicine were identified. Each article was examined to determine whether cluster randomization was taken into account in the design and statistical analysis. RESULTS. Of the 21 articles, only 4 (19%) included sample size calculations or discussions of power that allowed for clustering, while 12 (57%) took clustering into account in the statistical analysis. CONCLUSIONS. Design and analysis issues associated with cluster randomization are not recognized widely enough. Reports of cluster randomized trials should include sample size calculations and statistical analyses that take clustering into account, estimates of design effects to help others planning trials, and a table showing the baseline distribution of important characteristics by intervention group, including the number of clusters and average cluster size for each group.
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