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Table 4 Results of logistic regression models of factors predicting good/excellent work ability compared with the lifetime best

From: Work-life balance predicted work ability two years later: a cohort study of employees in the Swedish energy and water sector

   Crude
OR 95% CI
Model 1
OR 95% CI
Model 2
OR 95% CI
Model 3
OR 95% CI
Model 4
OR 95% CI
Work-life balance WIPLa 2.12** (1.49 to 2.98) 1.72** (1.18 to 2.49) 1.90** (1.27 to 2.84) 1.93** (1.26 to 2.94) 1.77** (1.15 to 2.73)
PLIWa 4.67** (2.59 to 8.43) 3.70** (2.01 to 6.80) 3.82** (2.01 to 7.26) 4.13** (2.08 to 8.21) 3.34** (1.66 to 6.74)
Employment Company      
Company 1 1   1 1 1
Company 2 1.18 (0.45 to 3.09)   1.39 (0.46 to 4.25) 1.65 (0.52 to 5.25) 1.87 (0.58 to 6.08)
Company 3 0.67 (0.25 to 1.74)   0.60 (0.20 to 1.81) 0.61 (0.20 to 1.88) 0.65 (0.21 to 2.07)
Position at work      
Production 1   1 1 1
Administration 1.23 (0.68 to 2.22)   1.04 (0.46 to 2.36) 1.10 (0.45 to 2.67) 1.12 (0.46 to 2.73)
Manager 1.77 (0.81 to 3.88)   2.85 (0.90 to 9.03) 3.41 (0.99 to 11.70) 3.55* (1.02 to 12.36)
Experience of leadership qualityb 1.37 (0.96 to 1.94)   1.45 (0.95 to 2.23) 1.45 (0.94 to 2.23) 1.48 (0.94 to 2.35)
Demographic Gender      
Male 1    1 1
Female 0.81 (0.47 to 1.42)    0.97 (0.41 to 2.30) 1.01 (0.42 to 2.42)
Age 0.96 (0.96 to 1.03)    0.97 (0.94 to 1.01) 0.98 (0.94 to 1.02)
Education level      
University 1    1 1
Secondary school or equal 0.64 (0.29 to 1.43)    0.48 (0.16 to 1.43) 0.43 (0.14 to 1.33)
Compulsory school 0.55 (0.24 to 1.28)    0.56 (0.15 to 1.20) 0.48 (0.13 to 1.79)
Baseline work ability regarding work ability compared with the lifetime best Poor/moderate at T0 1     1
Good/excellent at T0 8.91** (2.67 to 29.79)     4.63* (1.28 to 16.76)
Nagelkerke R Square (R2)   24% 31% 32% 36%
ΔR2    7% 1% 4%
  1. Odds ratio (OR), 95% CI: 95% confidence interval of factors predicting good/excellent work ability compared with the lifetime best. Work ability compared with the lifetime best was dichotomized into: Poor/moderate work ability compared to lifetime best (=0) and good/excellent work ability compared to lifetime best (=1). *P ≤ 0.05, **P ≤ 0.01 aWork interference with personal life (WIPL) and personal life interference with work (PLIW), was both three item index scales, ranging from 1 to 5 bExperience with leadership quality was measured with an index, ranging from 1 to 6. Model 1 = PLIW+WIPL, Model 2 = Model 1 + company+position at work+experience of leadership quality, Model 3 = Model 2 + gender+age + education level, Model 4 = Model 3 + baseline work ability compared with the lifetime best