TABLE 2.
General characteristics on complete cases of the 4 population studies in PREVIEW1
| Variable | Lifelines | NQplus | Young Finns Study | Quebec Family Study |
|---|---|---|---|---|
| N | 75,778 | 1316 | 1502 | 255 |
| Mean age, y | 45.7 (± 12.6) | 53.5 (± 11.3) | 38.0 (±5.0) | 40.4 (± 15.2) |
| Median age, y | 46.0 (37.0, 54.0) | 56.0 (47.0, 63.0) | 39.0 (33.0, 42.0) | 39.4 (26.2, 53.8) |
| Males, n (%) | 31,080 (41) | 684 (52) | 642 (43) | 110 (43) |
| Education, n (%) | ||||
| Low | 1624 (2) | 10 (1) | 530 (35) | 44 (17) |
| Intermediate | 50,331 (67) | 574 (43) | 607 (41) | 139 (55) |
| High | 23,526 (31) | 732 (56) | 365 (24) | 72 (28) |
| Smoking status, n (%) | ||||
| Never | 36,078 (48) | 693 (53) | 762 (51) | 216 (85) |
| Former | 25,436 (34) | 526 (40) | 355 (24) | –– |
| Current <10 cig/d | 6772 (9) | 43 (3) | 258 (17) | 11 (4) |
| Current ≥10 cig/d | 7166 (9) | 54 (4) | 127 (8) | 28 (11) |
| BMI, kg/m2 | 25.9 (± 4.1) | 25.7 (± 3.9) | 25.7 (± 4.5) | 25.6 (± 5.0) |
| BMI categories, n (%) | ||||
| Normal weight (<25 kg/m2) | 34,526 (46) | 624 (47) | 726 (48) | 134 (52) |
| Overweight (25–29.9 kg/m2) | 30,699 (40) | 523 (40) | 538 (36) | 83 (33) |
| Obese (≥30 kg/m2) | 10,537 (14) | 169 (13) | 238 (16) | 38 (15) |
| Waist circumference, cm | 89.8 (± 11.9) | 91.0 (± 12.1) | 87.9 (± 12.9) | 83.4 (± 13.9) |
| Sleep duration, h/d | 7.5 (± 1.0) | 7.3 (± 1.1) | 7.4 (± 0.8) | 7.7 (± 1.1) |
| Physical activity, MET-min/wk | ||||
| Moderate | 1673 (816, 2958) | 811 (211, 1681) | 223 (33, 667) | 2772 (1155, 5544) |
| Intense | 0 (0, 630) | 361 (1, 1409) | 104 (8, 548) | 210 (0, 1680) |
| Sedentary activities, min/wk | 840 (630, 1260) | 1861 (1261, 2701) | 2101 (1261, 2521) | 3185 (2520, 3990) |
| Medical history, n (%) | ||||
| CVD | 1645 (2) | 32 (2) | 0 (0) | –– |
| Hypertension | 16,201 (21) | 310 (24) | 80 (5) | 26 (10) |
| High cholesterol | 9886 (13) | 236 (18) | 176 (12) | 27 (11) |
| Medication use, n (%) | ||||
| Hypertension | 8741 (12) | 157 (12) | 97 (6) | 25 (10) |
| High cholesterol | 3912 (5) | 97 (7) | 24 (2) | –– |
1
Values are means ± SDs, median (25th, 75th percentiles), or n (%). Missing Lifelines: education (n = 297), smoking (n = 326), BMI (n = 16), waist (n = 16), sleep duration (n = 273), moderate and intense physical activity (n = 5220), sedentary activities (n = 132). cig, cigarettes; CVD, cardiovascular disease; HbA1c, glycated hemoglobin; MET, metabolic task equivalent; NQplus, Nutrient Questionnaires plus; PREVIEW, PREVention of diabetes through lifestyle Intervention and population studies in Europe and around the World.