Table 1.
Characteristics of case and control participants in NHS and NHSII
| NHS |
NHSII |
|||
|---|---|---|---|---|
| Characteristic | Cases (n = 120) | Controls (n = 357) | Cases (n = 46) | Controls (n = 133) |
| Age at blood draw, mean (s.d.), years | 56.0 (7.1) | 56.0 (7.1) | 44.4 (4.4) | 44.5 (5.3) |
| Age at diagnosis/censorship, mean (s.d.), years | 63.8 (8.2) | 63.8 (8.2) | 48.5 (4.7) | 48.5 (5.1) |
| Seropositive, % | 51 | — | 57 | — |
| Self-identified race white, % | 99 | 99 | 98 | 95 |
| Ever a smoker, % | 58 | 57 | 41 | 39 |
| BMI, mean (s.d.), kg/m2 | 25.3 (4.2) | 24.6 (4.3) | 28.5 (6.3) | 25.8 (5.3) |
| Northeastern region residence, % | 23 | 18 | 28 | 19 |
| Alcohol consumption, average (s.d.), g/day | 4.5 (5.9) | 6.6 (9.4) | 2.6 (3.5) | 3.0 (5.2) |
| Physical activity, metabolic equivalent-hours/week (s.d.) | 14.3 (14.9) | 18.1 (43.5) | 13.9 (14.4) | 17.5 (21.3) |
NHS: Nurses’ Health Study; NHSII: Nurses’ Health Study II.