Table 1 Socio-demographic characteristics of the total Copenhagen Aging and Midlife Biobank (CAMB) sample and across body mass index categories
| Â | Total | Under weight | Normal weight | Overweight | Obese | Severely obese | P value1 |
|---|---|---|---|---|---|---|---|
N | 5286 | 55 | 2243 | 2198 | 746 | 44 | Â |
Sex N (%) | |||||||
 - Men | 3613 (68) | 16 (29) | 1356 (61) | 1676 (76) | 541 (73) | 24 (54) | <0.001 |
 - women | 1673 (32) | 39 (71) | 887 (39) | 522 (24) | 205 (27) | 20 (46) | |
Age N (%) | |||||||
 - Age 49–53 | 2262 (43) | 34 (62) | 1067 (48) | 826 (38) | 311 (42) | 24 (54) | <0.001 |
 - Age 56–63 | 3024 (57) | 21 (38) | 1176 (52) | 1372 (62) | 435 (58) | 20 (46) | |
Social class N (%) | |||||||
 - I | 826 (16) | 10 (18) | 407 (18) | 330 (15) | 76 (10) | 3 (7) | <0.001 |
 - II | 1376 (26) | 13 (24) | 597 (27) | 576 (26) | 182 (24) | 8 (18) | |
 - III | 1231 (23) | 6 (11) | 506 (23) | 541 (25) | 168 (22) | 10 (23) | |
 - IV | 870 (16) | 9 (16) | 361 (16) | 362 (16) | 131 (18) | 7 (16) | |
 - V | 447 (8) | 6 (11) | 164 (7) | 183 (8) | 89 (12) | 5 (11) | |
 - Transfer income | 501 (10) | 11 (20) | 189 (8) | 197 (9) | 94 (13) | 10 (23) | |
 - Other | 35 (1) | 0 (0) | 19 (1) | 9 (1) | 6 (1) | 1 (2) | |
Education in years M (SD) | 13.2 (2.4) | 13.4 (2.7) | 3.6 (2.4) | 13.0 (2.4) | 12.4 (2.3) | 12.1 (2.2) | <0.001 |