Table 1.
Baseline Characteristics of Cases and Subcohort Members of the Netherlands Cohort Study on Diet and Cancer, 1986–2002
| Cases (n = 375) |
Subcohort (n = 2,331) |
|||||
| Mean (SD) | No. | % | Mean (SD) | No. | % | |
| Age, years | 62.0 (4.3) | 61.5 (4.3) | ||||
| Height, cm | 165.8 (6.1) | 165.2 (6.2) | ||||
| Weight, kg | 69.7 (10.8) | 68.5 (10.2) | ||||
| Body mass index, kg/m2 | 25.2 (3.5) | 25.1 (3.5) | ||||
| Family history of ovarian or breast cancer | 30 | 8.0 | 199 | 8.5 | ||
| Educational level | ||||||
| Primary school | 129 | 34.9 | 806 | 35.0 | ||
| Lower vocational school | 96 | 26.0 | 539 | 23.4 | ||
| High school/intermediate vocational school | 118 | 31.9 | 764 | 33.2 | ||
| Higher vocational school/university | 27 | 7.3 | 191 | 8.3 | ||
| Smoking status | ||||||
| Never | 241 | 64.3 | 1,361 | 58.4 | ||
| Current | 67 | 17.9 | 491 | 21.1 | ||
| Former | 67 | 17.9 | 479 | 20.6 | ||
Abbreviation: SD, standard deviation.