Michael K. Chapko

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OBJECTIVE Our aim was to identify predictors of colorectal cancer screening in the United States and subgroups with particularly low rates of screening. METHODS The responses to a telephone-administered questionnaire of a nationally representative sample of 61,068 persons aged >/=50 yr were analyzed. Current screening was defined as either(More)
Oral complications can be serious and disabling problems for patients undergoing cancer therapy. Therefore, the authors wanted to develop a sensitive and specific instrument to measure oral mucosal changes during therapy. The Oral Mucosa Rating Scale (OMRS) has an examination rating scale to quantify the type and severity of clinically evident oral mucosal(More)
No prospective data have documented the physical and psychosocial functioning of patients before and after BMT. In this study 67 allogeneic transplant patients completed standardized self-report measures pre-transplant. Survivors were re-assessed at 90 days (n = 34) and 1 year (n = 31) post-transplant. Telephone interviews established 4-year work history(More)
While there are many claims that abnormal breathing patterns alter facial growth, there are limited controlled data to confirm this. We evaluated forty-five North American Caucasians of both sexes, ranging in age from 6 to 12 years. Thirty chronically allergic mouth-breathing subjects were selected from a pediatric allergy practice, and fifteen nonallergic(More)
This paper compares two quite different approaches to estimating costs: a 'bottom-up' approach, represented by the US Department of Veterans Affairs' (VA) Decision Support System that uses local costs of specific inputs; and a 'top-down' approach, represented by the costing system created by the VA Health Economics Resource Center, which assigns the VA(More)
The present study was undertaken to evaluate the long-term status of teeth that had undergone root resorption during active orthodontic treatment. A total of 100 patients who exhibited root resorption during appliance therapy were recalled at a mean period of 14.1 years (SD 0.4) after treatment. At those examinations full-mouth sets of periapical(More)
This study compared hospital to ambulatory nutritional rehabilitation outcomes and costs. Following a hospital stay to resolve initial acute medical conditions, 100 malnourished children (54 per cent male, ages 5 to 28 months) in Niger were randomly assigned to either hospital or ambulatory nutritional rehabilitation. Anthropometric measures were assessed(More)
The purpose of this study is to determine the relationship of third molars to changes in the mandibular dental arch. The sample for this study consisted of four groups and subgroups. The groups consisted of premolar extraction treated, nonextraction treated with initial generalized spacing, nonextraction treated, and serial extraction untreated subjects.(More)
OBJECTIVE To describe the association between type of health insurance coverage and the quality of care provided to individuals with diabetes in the United States. DATA SOURCE The 2000 Behavioral Risk Factor Surveillance System. STUDY DESIGN Our study cohort included individuals who reported a diagnosis of diabetes (n=11,647). We performed bivariate and(More)
BACKGROUND The Department of Veterans Affairs (VA) recently initiated a system of Community- Based Outpatient Clinics (CBOCs) to enhance delivery of primary care to veterans. OBJECTIVE The objective of this study was to determine the effect of CBOCs on patients' perceptions of care. RESEARCH DESIGN The study design is a cross-sectional survey. (More)