Table 1 Sample characteristics and prevalences of physical activity among women in the Stanford Heart Disease Prevention Program, 1979–90
Distribution, n (%)Daily energy expenditure (mean kcal/kg/day)Moderate physical activity (mean count)Vigorous physical activity (% yes)
Overall2672 (100.0)35.71.7 range 1–47.0
Individual factors
Age group (years)
    25–441417 (53.0)36.41.810.4
    45–64912 (34.1)35.31.73.8
    65–74343 (12.8)34.11.61.8
Race/ethnicity
    Hispanic308 (11.5)36.71.36.2
    White, non-Hispanic2238 (83.8)35.61.87.1
    Other race/ethnicity126 (4.7)35.51.47.9
Marital status
    Married1738 (65.0)35.71.76.7
    Never married219 (8.2)36.12.011.9
    Previously married715 (26.8)35.61.76.3
Education
    < High school458 (17.2)36.11.22.6
    High school graduate817 (30.6)35.71.64.4
    Some college1080 (40.4)35.61.98.8
    College graduate315 (11.8)35.52.114.3
Income
    0–200%610 (24.0)35.81.65.3
    201–400%972 (38.3)36.01.76.7
    401–600%540 (21.3)35.41.98.3
    601+%417 (16.4)35.32.09.1
Design factors
City
    Monterey715 (26.8)35.32.09.1
    Salinas700 (26.2)36.21.55.3
    Modesto719 (26.9)35.91.54.7
    San Luis Obispo538 (20.1)35.42.09.7
Survey
    1 (1979–80)837 (31.3)35.71.76.3
    4 (1985–86)910 (34.1)36.61.96.9
    5 (1989–90)925 (34.6)34.81.67.8
Neighbourhood socioeconomic status
    Low (25%)463 (17.3)36.61.66.7
    Moderate (50)1349 (50.5)35.61.76.2
    High (25%)860 (32.2)35.41.88.5