Table 2.
Sample characteristics by sex of the LifeLines Cohort Study
| Women | Men | Total | |
|---|---|---|---|
| Na (%) | 56 053 (58.7) | 39 379 (41.3) | 95 432 |
| Age (years) | 44.9 (12.6) | 45.7 (12.7) | 45.2 (12.6) |
| Education (%) | |||
| No or primary | 3.2 | 3.0 | 3.1 |
| Lower or preparatory vocational | 12.4 | 16.2 | 14.0 |
| Lower general secondary | 16.0 | 11.7 | 14.2 |
| Intermediate vocational or apprenticeship | 30.6 | 31.0 | 30.8 |
| Higher general secondary or pre-university secondary | 9.9 | 7.0 | 8.7 |
| Higher vocational or university | 28.1 | 31.0 | 29.3 |
| Current smokers (%) | 20.4 | 23.8 | 21.8 |
| BMI (kg/m2) | 25.9 (4.7) | 26.4 (3.7) | 26.1 (4.3) |
| SBP (mmHg) | 122.1 (15.3) | 130.7 (14.0) | 125.6 (15.3) |
| DBP (mmHg) | 71.8 (8.7) | 76.6 (9.3) | 73.8 (9.3) |
| FVC (L) | 3.9 (0.6) | 5.4 (0.9) | 4.5 (1.1) |
| FEV1 (L) | 3.0 (0.6) | 4.1 (0.8) | 3.5 (0.8) |
| Urbanity b (%) | |||
| Rural | 40.8 | 41.9 | 41.2 |
| Semi-rural | 24.3 | 25.4 | 24.8 |
| Intermediate urban-rural | 17.5 | 16.7 | 17.1 |
| Semi-urban | 10.6 | 10.1 | 10.4 |
| Urban | 6.8 | 6.0 | 6.5 |
Means (SD) are presented for continuous variables, and percentages are presented for categorical variables
a Data are based on the first data release of n = 95,432
bAverage number of addresses per km2 within a range of 1 kilometer, categorized into five levels ranging from rural (<500 addresses per km2) to urban (≥2500 addresses per km2)
Abbreviations: BMI body mass index, SBP systolic blood pressure, DBP diastolic blood pressure, FVC forced vital capacity, FEV1 forced expiratory volume in 1 second