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)
UnderweightWeight loss2 (0.1)†55.5 (54; 57)48.5 (45; 52)−0.3 (−0.4; −0.3)
Stable weight167 (4.6)53 (50; 56)55 (51; 59)0.1 (0; 0.2)
Moderate weight gain259 (7.1)53 (50; 58)65.3 (60; 70.4)0.5 (0.4; 0.7)
High weight gain25 (0.7)†52 (50; 57)78 (74; 85)1.2 (1.1; 1.5)
Normal BMIWeight loss38 (1)63.5 (60; 74)55 (52; 65)−0.4 (−0.4; −0.3)
Stable weight715 (19.5)64 (59; 72)65.8 (60; 74)0.1 (0.0; 0.2)
Moderate weight gain1164 (31.7)65 (60; 72)76 (70; 84)0.5 (0.4; 0.7)
High weight gain180 (4.9)66 (60; 72)92.4 (86; 98)1.2 (1.1; 1.4)
OverweightWeight loss52 (1.4)80 (76; 87)71 (66; 75.8)−0.4 (−0.6; −0.3)
Stable weight291 (7.9)79 (73; 85)80 (73; 86.8)0.1 (−0.1; 0.2)
Moderate weight gain454 (12.4)80 (73; 86)90.9 (84; 97.1)0.5 (0.4; 0.7)
High weight gain95 (2.6)79 (70; 85)103 (96.4; 113.9)1.3 (1.1; 1.5)
ObeseWeight loss46 (1.3)95 (87; 105)85 (72; 93)−0.6 (−0.9; −0.4)
Stable weight65 (1.8)90 (85; 100)92 (85; 101)0.1 (−0.1; 0.1)
Moderate weight gain85 (2.3)93 (87; 103)105 (97.1; 114)0.5 (0.4; 0.7)
High weight gain35 (1)95 (85; 109)125 (112; 135)1.3 (1.1; 1.8)
Overall3673 (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.