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The prevalence of selected physical activities and their relation with coronary heart disease risk factors in elderly men: the Zutphen Study, 1985.
Caspersen CJ, Bloemberg BP, Saris WH, Merritt RK, Kromhout D. Caspersen CJ, et al. Am J Epidemiol. 1991 Jun 1;133(11):1078-92. doi: 10.1093/oxfordjournals.aje.a115821. Am J Epidemiol. 1991. PMID: 2035512 Clinical Trial.
Physical activity behaviors in lower and higher socioeconomic status populations.
Ford ES, Merritt RK, Heath GW, Powell KE, Washburn RA, Kriska A, Haile G. Ford ES, et al. Am J Epidemiol. 1991 Jun 15;133(12):1246-56. doi: 10.1093/oxfordjournals.aje.a115836. Am J Epidemiol. 1991. PMID: 2063832
Physical activity trends among 26 states, 1986-1990.
Caspersen CJ, Merritt RK. Caspersen CJ, et al. Med Sci Sports Exerc. 1995 May;27(5):713-20. Med Sci Sports Exerc. 1995. PMID: 7674876
Surveillance for selected tobacco-use behaviors--United States, 1900-1994.
Giovino GA, Schooley MW, Zhu BP, Chrismon JH, Tomar SL, Peddicord JP, Merritt RK, Husten CG, Eriksen MP. Giovino GA, et al. MMWR CDC Surveill Summ. 1994 Nov 18;43(3):1-43. MMWR CDC Surveill Summ. 1994. PMID: 7969014
State smoking prevalence estimates: a comparison of the Behavioral Risk Factor Surveillance System and current population surveys.
Arday DR, Tomar SL, Nelson DE, Merritt RK, Schooley MW, Mowery P. Arday DR, et al. Am J Public Health. 1997 Oct;87(10):1665-9. doi: 10.2105/ajph.87.10.1665. Am J Public Health. 1997. PMID: 9357350 Free PMC article.
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