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. Author manuscript; available in PMC: 2012 Jul 30.
Published in final edited form as: Ann Intern Med. 2011 Dec 6;155(11):725–732. doi: 10.1059/0003-4819-155-11-201112060-00004

Appendix Table 2.

Mean (SD) Age and BMI in Men and Women According to Study, Time Period, and Cohort

STUDY MEN WOMEN
NHANES* Time Period 1974–75 1976–80 1988–94 1974–75 1976–80 1988–94
    White/Mexican American     Age 66.7 (4.1) 65.9 (4.1) 67.2 (4.2) 66.5 (4.2) 66.2 (4.2) 67.4 (4.2)
    BMI 25.4 (3.8) 25.8 (3.9) 27.4 (4.2) 26.8 (5.1) 26.5 (5.5) 27.9 (5.8)
    African American     Age 66.6 (3.8) 66.4 (4.3) 67.0 (4.2) 66.5 (4.3) 66.2 (4.2) 66.7 (4.0)
    BMI 25.1 (4.9) 25.3 (4.4) 26.7 (5.0) 27.4 (6.6) 28.5 (5.6) 30.0 (6.8)
NHANES Time Period 1999–2000 2001–02 2003–04 1999–2000 2001–02 2003–04
    White/Mexican American     Age 66.2 (4.3) 67.2 (4.4) 66.9 (4.4) 66.6 (4.3) 66.6 (4.4) 66.5 (4.3)
    BMI 28.7 (4.9) 28.6 (4.6) 28.9 (5.3) 29.1 (6.0) 29.2 (6.2) 29.1 (6.0)
    African American     Age 66.2 (4.3) 65.7 (3.9) 66.0 (4.1) 65.9 (4.4) 66.0 (4.4) 65.3 (4.0)
    BMI 27.8 (5.5) 28.4 (6.2) 28.1 (5.0) 32.0 (7.2) 31.3 (5.9) 31.9 (6.9)
FOA Time Period 1983–85 1992–95 2002–05 1983–85 1992–95 2002–05
    Age 76.1 (5.2) 78.5 (5.2) 76.0 (4.5) 76.1 (4.9) 79.8 (6.0) 75.9 (4.3)
    BMI 25.4 (3.2) 25.9 (3.9) 28.5 (4.5) 25.1 (4.5) 24.9 (5.0) 27.7 (5.5)
*

Average NHANES BMI based on available BMI data

Abbreviations: SD-standard deviation; NHANES-National Health and Nutrition Examination Surveys; FOA-Framingham Osteoarthritis Study; BMI-body mass index