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Table 3 Baseline characteristics of longitudinal samples

From: Effort-reward imbalance and work ability: cross-sectional and longitudinal findings from the Second German Sociomedical Panel of Employees

  Predicting new cases of poor or moderate work ability Predicting new cases of effort-reward imbalance
  n = 600 n = 666
WAI, mean (SD) 42.5 (3.4) 40.4 (5.7)
WAI   
 Good or excellent, % 100.0 79.0
 Poor or moderate, % - 21.0
Gender: female, % 30.0 33.3
Age, mean (SD) 50.7 (4.0) 51.0 (4.1)
Low educational level, % 27.3 31.8
White-collar worker, % 98.5 98.0
Exercise: at least two hours per week, % 53.0 53.8
BMI ≥ 25, % 55.3 55.0
Smoking, % 20.2 20.0
Health-related behaviour (0–3), mean (SD) 1.7 (0.9) 1.7 (0.9)
Physical demands (0–12), mean (SD) 0.7 (1.4) 0.8 (1.3)
Psychological job demands (0–4), mean (SD) 1.2 (0.8) 1.1 (0.8)
Job control (0–4), mean (SD) 3.4 (0.6) 3.3 (0.6)
Effort (5–25), mean (SD) 13.8 (4.1) 13.3 (3.6)
Reward (11–55), mean (SD) 47.0 (7.2) 47.7 (6.3)
ER ratio, mean (SD) 0.7 (0.3) 0.6 (0.2)
ERI: ER ratio > 1, % 12.3 -
  1. SD, standard deviation; WAI, Work Ability Index; BMI, body mass index; ER ratio, effort-reward ratio; ERI, effort-reward imbalance.