Table 2 Baseline demographic characteristics of the study population by study
From: Methodology and challenges for harmonization of nutritional data from seven historical studies
| Â | Study | ||||||
|---|---|---|---|---|---|---|---|
Characteristic | IIHD n = 10,059 | GOH n = 632 | Ovary n = 1,763 | NNS n = 986 | NICCCS n = 13,357 | Mabat Zahav n = 1,751 | HDS n = 1,098 |
Sex, male, n (%) | 10,059 (100) | 305 (48.3) | 0 (0) | 451 (45.7) | 3,072 (23) | 819 (46.8) | 549 (50) |
Age, mean ± SD | 49.3 ± 6.3 | 54.7 ± 8.1 | 57.5 ± 14.0 | 57.9 ± 12.8 | 65.1 ± 13.3 | 74.6 ± 6.2 | 50.9 ± 14.3 |
Smoking status, n (%) | |||||||
 Never | 3,158 (31.4) | 379 (60) | 1,193 (67.7) | - | 8,242 (61.7) | 945 (54) | 608 (55.4) |
 Current | 5,217 (51.9) | 182 (28.8) | 327 (18.5) | - | 1,997 (15.0) | 190 (10.9) | 306 (27.9) |
 Past | 1,677 (16.7) | 62 (9.8) | 239 (13.6) | - | 3,097 (23.2) | 607 (34.7) | 184 (16.8) |
 Missing | 7 (0.1) | 9 (1.4) | 4 (0.2) | - | 21 (0.2) | 9 (0.5) |  |
Physical activity, n (%) | |||||||
 Yes | 7,390 (73.5) | 494 (78.2) | 1,113 (63.1) | - | 5,685 (42.6) | 1,032 (40) | 447 (40.7) |
 No | 2,229 (22.2) | 22 (3.5) | 645 (36.6) | - | 7,651 (57.3) | 708 (59) | 651 (59.3) |
 Missing | 440 (4.4) | 116 (18.4) | 5 (0.3) | - | 21 (0.2) | 11 (1) | - |
BMI, Kg/m2, n (%) | |||||||
  < 20 | 449 (4.5) | 12 (1.9) | 116 (6.6) | 42 (4.3) | 514 (3.8) | 20 (1.1) | 37 (3.4) |
 20–24.9 | 3,752 (37.3) | 259 (41.0) | 627 (35.6) | 331 (33.6) | 4,126 (30.9) | 257 (14.7) | 228 (20.8) |
 25–29.9 | 4,888 (48.6) | 256 (40.5) | 523 (29.7) | 380 (38.5) | 4,874 (36.5) | 697 (39.8) | 435 (39.6) |
  ≥ 30 | 945 (9.4) | 96 (15.2) | 301 (17.1) | 205 (20.8) | 3,295 (24.7) | 601 (34.3) | 379 (34.5) |
 Missing | 25 (0.2) | 9 (1.4) | 196 (11.1) | 28 (2.8) | 548 (4.1) | 176 (10.1) | 19 (1.7) |
Education, years, n (%) | |||||||
  < 12 | 6,162 (61.4) | - | 667 (37.8) | 383 (38.8) | 4,058 (30.4) | 852 (48.7) | 535 (48.7) |
 12 | 1,635 (16.3) | - | 370 (21.0) | 239 (24.2) | 2,662 (19.9) | 298 (17) | 206 (18.8) |
  > 12 | 2,226 (22.1) | - | 718 (40.7) | 362 (36.7) | 6,039 (45.2) | 593 (33.9) | 354 (32.2) |
 Missing | 36 (0.4) | - | 8 (0.5) | 2 (0.2) | 598 (4.5) | 8 (0.5) | 3 (0.3) |
Ethnicity*, n (%) | |||||||
 Europe/America | 5,037 (50.1) | 260 (41.1) | 1,008 (57.2) | 0 | 5,496 (41.1) | 782 (44.7) | 230 (20.9) |
 Africa/Asia | 3,591 (35.7) | 372 (58.9) | 309 (17.5) | 0 | 2,406 (18.0) | 413 (23.6) | 102 (9.2) |
 Israel | 1,431 (14.2) | 0 | 446 (25.3) | 190 (19.3) | 3,686 (26.8) | 267 (15.2) | 218 (19.8) |
 Israeli Arab /others | 0 | 0 | 0 | 0 | 1,742 (13.0) | 287 (16.4) | 548 (49.9) |
 Missing | 0 | 0 | 0 | 796 (80.7) | 127 (1.0) | 2 (0.1) |  |