Table 2.
Descriptive statistics of weight change profiles
| Weight change profiles* | N (%) | Weight ECRHS I (kg) Median (P25; P75) |
Weight ECRHS III (kg) Median (P25; P75) |
Weight change during follow-up (kg/year) Median (P25; P75) |
|
| Underweight | Weight loss | 2 (0.1)† | 55.5 (54; 57) | 48.5 (45; 52) | −0.3 (−0.4; −0.3) |
| Stable weight | 167 (4.6) | 53 (50; 56) | 55 (51; 59) | 0.1 (0; 0.2) | |
| Moderate weight gain | 259 (7.1) | 53 (50; 58) | 65.3 (60; 70.4) | 0.5 (0.4; 0.7) | |
| High weight gain | 25 (0.7)† | 52 (50; 57) | 78 (74; 85) | 1.2 (1.1; 1.5) | |
| Normal BMI | Weight loss | 38 (1) | 63.5 (60; 74) | 55 (52; 65) | −0.4 (−0.4; −0.3) |
| Stable weight | 715 (19.5) | 64 (59; 72) | 65.8 (60; 74) | 0.1 (0.0; 0.2) | |
| Moderate weight gain | 1164 (31.7) | 65 (60; 72) | 76 (70; 84) | 0.5 (0.4; 0.7) | |
| High weight gain | 180 (4.9) | 66 (60; 72) | 92.4 (86; 98) | 1.2 (1.1; 1.4) | |
| Overweight | Weight loss | 52 (1.4) | 80 (76; 87) | 71 (66; 75.8) | −0.4 (−0.6; −0.3) |
| Stable weight | 291 (7.9) | 79 (73; 85) | 80 (73; 86.8) | 0.1 (−0.1; 0.2) | |
| Moderate weight gain | 454 (12.4) | 80 (73; 86) | 90.9 (84; 97.1) | 0.5 (0.4; 0.7) | |
| High weight gain | 95 (2.6) | 79 (70; 85) | 103 (96.4; 113.9) | 1.3 (1.1; 1.5) | |
| Obese | Weight loss | 46 (1.3) | 95 (87; 105) | 85 (72; 93) | −0.6 (−0.9; −0.4) |
| Stable weight | 65 (1.8) | 90 (85; 100) | 92 (85; 101) | 0.1 (−0.1; 0.1) | |
| Moderate weight gain | 85 (2.3) | 93 (87; 103) | 105 (97.1; 114) | 0.5 (0.4; 0.7) | |
| High weight gain | 35 (1) | 95 (85; 109) | 125 (112; 135) | 1.3 (1.1; 1.8) | |
| Overall | 3673 (100) | 68 (59; 78) | 76 (66; 87.3) | 0.4 (0.1; 0.7) | |
*Weight change profiles were defined combining BMI at baseline and weight change during follow-up. BMI categories at baseline: underweight: BMI <20 kg/m2; normal weight: 20 kg/m2≤BMI<25 kg/m2; overweight: 25 kg/m2 ≤BMI <30 kg/m2; obese: BMI ≥30 kg/m2. Weight change was computed as the difference between weight measured at ECRHS III and ECRHS I divided by the total duration follow-up (in years). Weight change categories: weight loss: <−0.25 kg/year; stable: within ±0.25 kg/year; moderate weight gain: 0.25–1 kg/year; high weight gain: >1 kg/year.
†Not analysed further because of small sample size.