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Dichotomizing continuous outcome variables: dependence of the magnitude of association and statistical power on the cutpoint.
Ragland DR. Ragland DR. Epidemiology. 1992 Sep;3(5):434-40. doi: 10.1097/00001648-199209000-00009. Epidemiology. 1992. PMID: 1391136
John Henryism, education, and blood pressure in young adults. The CARDIA study. Coronary Artery Risk Development in Young Adults Study.
McKetney EC, Ragland DR. McKetney EC, et al. Among authors: ragland dr. Am J Epidemiol. 1996 Apr 15;143(8):787-91. doi: 10.1093/oxfordjournals.aje.a008816. Am J Epidemiol. 1996. PMID: 8610688
Psychosocial job factors, physical workload, and incidence of work-related spinal injury: a 5-year prospective study of urban transit operators.
Krause N, Ragland DR, Fisher JM, Syme SL. Krause N, et al. Among authors: ragland dr. Spine (Phila Pa 1976). 1998 Dec 1;23(23):2507-16. doi: 10.1097/00007632-199812010-00005. Spine (Phila Pa 1976). 1998. PMID: 9854749
Disease and injury in California with projections to the year 2007. Implications for medical education.
Ragland DR, Buffler PA, Reingold AL, Syme SL, Buffler ML. Ragland DR, et al. West J Med. 1998 May;168(5):378-99. West J Med. 1998. PMID: 9614796 Free PMC article. Review.
Hypertension and years of driving in transit vehicle operators.
Ragland DR, Greiner BA, Holman BL, Fisher JM. Ragland DR, et al. Scand J Soc Med. 1997 Dec;25(4):271-9. doi: 10.1177/140349489702500410. Scand J Soc Med. 1997. PMID: 9460141
Psychosocial job factors associated with back and neck pain in public transit operators.
Krause N, Ragland DR, Greiner BA, Syme SL, Fisher JM. Krause N, et al. Among authors: ragland dr. Scand J Work Environ Health. 1997 Jun;23(3):179-86. doi: 10.5271/sjweh.196. Scand J Work Environ Health. 1997. PMID: 9243727
Limitations in upper-body strength associated with breast cancer: a comparison of black and white women.
Satariano WA, Ragland DR, DeLorenze GN. Satariano WA, et al. Among authors: ragland dr. J Clin Epidemiol. 1996 May;49(5):535-44. doi: 10.1016/0895-4356(95)00565-x. J Clin Epidemiol. 1996. PMID: 8636727
Socioeconomic indicators and mortality from coronary heart disease and cancer: a 22-year follow-up of middle-aged men.
Bucher HC, Ragland DR. Bucher HC, et al. Among authors: ragland dr. Am J Public Health. 1995 Sep;85(9):1231-6. doi: 10.2105/ajph.85.9.1231. Am J Public Health. 1995. PMID: 7661230 Free PMC article.
Coronary heart disease mortality in the Western Collaborative Group Study. Follow-up experience of 22 years.
Ragland DR, Brand RJ. Ragland DR, et al. Am J Epidemiol. 1988 Mar;127(3):462-75. doi: 10.1093/oxfordjournals.aje.a114823. Am J Epidemiol. 1988. PMID: 3341353
Excess risk of sickness and disease in bus drivers: a review and synthesis of epidemiological studies.
Winkleby MA, Ragland DR, Fisher JM, Syme SL. Winkleby MA, et al. Among authors: ragland dr. Int J Epidemiol. 1988 Jun;17(2):255-62. doi: 10.1093/ije/17.2.255. Int J Epidemiol. 1988. PMID: 3042649 Review.
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