Table 1. Sample characteristics of 6-, 18- and 30-year-old individuals that wore the accelerometer for six and less than six measurement days.
| 6 years | 18 years | 30 years | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Variables | < 6 days (n = 2,500) |
≥ 6 days (n = 103) |
< 6 days (n = 3,090) |
≥ 6 days (n = 503) |
< 6 days (n = 2,260) |
≥ 6 days (n = 452) |
|||
| n (%) | n (%) | p value | n (%) | n (%) | p value | n (%) | n (%) | p value | |
| Gender | 0.132 | 0.005 | 0.410 | ||||||
| Male | 1,294 (51.8) | 47 (45.6) | 1,487 (48.1) | 276 (54.9) | 1,099 (48.6) | 210 (46.5) | |||
| Female | 1,206 (48.2) | 56 (54.4) | 1,603 (51.9) | 227 (45.1) | 1,161 (51.4) | 242 (53.5) | |||
| Asset index (quintiles) | 0.147 | 0.741 | 0.349 | ||||||
| 1º (poorest) | 246 (10.1) | 10 (9.8) | 616 (20.1) | 104 (20.7) | 514 (24.4) | 121 (28.7) | |||
| 2º | 371 (15.3) | 23 (22.6) | 615 (20.0) | 91 (18.1) | 453 (21.5) | 86 (20.4) | |||
| 3º | 574 (23.6) | 15 (14.7) | 608 (19.8) | 109 (21.7) | 566 (26.8) | 100 (23.7) | |||
| 4º | 489 (20.1) | 22 (21.6) | 631 (20.5) | 105 (20.9) | 195 (9.2) | 42 (10.0) | |||
| 5º (richest) | 750 (30.9) | 32 (31.4) | 603 (19.6) | 93 (18.5) | 383 (18.1) | 73 (17.3) | |||
| BMI | 0.060 | 0.600 | 0.958 | ||||||
| Normal | 1,487 (63.9) | 70 (72.9) | 2,189 (72.3) | 368 (73.9) | 889 (41.0) | 175 (40.3) | |||
| Overweight | 434 (18.7) | 18 (18.8) | 543 (17.9) | 80 (16.1) | 755 (34.8) | 154 (35.5) | |||
| Obesity | 405 (17.4) | 8 (8.3) | 297 (9.8) | 50 (10.0) | 524 (24.2) | 105 (24.2) | |||
Missing values: Asset index at 6 years(n = 1), 18 years(n = 1) and 30 years(n = 30); BMI at 6 years (n = 7), 18 years (n = 5) and 30 years(n = 18)