Comparison of respondents and nonrespondents in an osteoporosis study.

摘要: We attempted to enroll an age-stratified random sample of Rochester, Minnesota women > or = 30 years age in a population-based prospective study the determinants bone loss. Using resources Rochester Epidemiology Project, 541 were contacted and 305 agreed participate. Of 236 nonrespondents, 38 ineligible 198 refused participate resulting 61% response rate for eligible subjects. reviewed community medical records respondents nonrespondents (including ineligibles) determine whether two groups differed with regard variables that might be important osteoporosis research. There was little difference between history cigarette smoking, hyperthyroidism, thyroidectomy, age-related fractures. Respondents survived better, less likely obese have renal failure, more had oophorectomy consume alcohol (P < 0.01). These data suggest healthy than respondents.