TABLE 1.
Characteristics of participants (n = 524) in the Seasonal Variation of Blood Cholesterol Study, Worcester, MA (1994–1998)1
| Value | |
|---|---|
| Categorical variable [n (%)] | |
| Sex | |
| Male | 268 (51.2) |
| Female | 256 (48.8) |
| Race-ethnicity | |
| White | 444 (87.1) |
| Nonwhite | 66 (12.9) |
| Marital status | |
| Married | 402 (77.01) |
| Not married | 120 (22.99) |
| Education | |
| High school or less | 128 (24.6) |
| Some college | 190 (36.5) |
| Bachelor's degree or more | 203 (38.9) |
| BMI (kg/m2) | |
| Normal, 18.5–24.9 | 198 (37.8) |
| Overweight, 25–29.9 | 207 (39.5) |
| Obese, ≥ 30 | 119 (22.7) |
| Current smoking | |
| Yes | 75 (15.40) |
| No | 412 (84.60) |
| Infection status | |
| Reported infection at all 5 visits | 56 (10.69) |
| Reported infection at ≥1 visit | 345 (65.84) |
| No infection | 123 (23.47) |
| Continuous variable2 | |
| Age (y) | 48.3 ± 12.4 |
| BMI (kg/m2) | 27.2 ± 5.4 |
| Physical activity | |
| Energy expenditure (MET-h/d) | |
| Total | 30.2 ± 4.6 |
| Leisure | 1.9 ± 2.0 |
| Occupational | 4.4 ± 5.5 |
| Household | 4.7 ± 3.3 |
1
Because of missing values, the total numbers of subjects differ. MET-h/d, metabolic equivalent hours per day.
2
All values are x̄ ± SD.