Table 2.
Predictors of life satisfaction using linear mixed models
| Unadjusted | Adjusted | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Model 1 (n = 633) | Model 2 (n = 590)a | |||||||||||
| b | t | 95% CI | p-value | b | t | 95% CI | p-value | b | t | 95% CI | p-value | |
| Block 1: Individual and lifestyle factors | ||||||||||||
| Age (continuous) | − 0.02 | −2.54 | − 0.04– –0.005 | 0.011 | −0.007 | − 0.81 | − 0.02–0.01 | 0.418 | − 0.009 | − 1.07 | − 0.02–0.007 | 0.281 |
| Gender, female | 0.03 | 0.68 | −0.06–0.12 | 0.494 | 0.11 | 2.33 | 0.01–0.21 | 0.020 | 0.09 | 2.03 | 0.003–0.18 | 0.043 |
| Having children | 0.12 | 3.21 | 0.05–0.20 | 0.001 | 0.01 | 0.35 | −0.07–0.10 | 0.722 | ||||
| Married/cohabiting | 0.31 | 6.94 | 0.22–0.40 | < 0.001 | 0.33 | 6.44 | 0.23–0.44 | < 0.001 | 0.46 | 9.16 | 0.36–0.56 | < 0.001 |
| Perceived social support | 0.02 | 7.78 | 0.01–0.02 | < 0.001 | 0.01 | 3.10 | 0.004–0.01 | 0.002 | 0.02 | 4.52 | 0.01 − 0.03 | < 0.001 |
| Physical activity | 0.13 | 8.25 | 0.10–0.16 | < 0.001 | 0.12 | 6.70 | 0.08–0.15 | < 0.001 | 0.08 | 4.49 | 0.04–0.12 | < 0.001 |
| Religious activity | 0.05 | 1.25 | –0.03–0.14 | 0.209 | ||||||||
| Use of alcohol to cope with tension | −0.44 | −7.94 | −0.55– −0.33 | < 0.001 | –0.33 | −5.45 | − 0.46– –0.21 | < 0.001 | −0.24 | −3.89 | − 0.37– –0.12 | < 0.001 |
| Hazardous drinking | −0.26 | −5.17 | − 0.36– − 0.16 | < 0.001 | –0.16 | −2.95 | − 0.27– –0.05 | 0.003 | − 0.16 | −2.93 | −0.27– –0.05 | 0.003 |
| Neuroticism | −0.07 | −6.89 | −0.10– − 0.05 | < 0.001 | –0.05 | − 4.76 | − 0.08– –0.03 | < 0.001 | − 0.04 | − 3.66 | −0.06– –0.01 | < 0.001 |
| Extraversion | 0.04 | 4.03 | 0.02–0.06 | < 0.001 | 0.02 | 2.39 | 0.004–0.04 | 0.017 | 0.01 | 1.31 | −0.006–0.03 | 0.188 |
| Reality weakness | −0.10 | −6.46 | −0.13– –0.07 | < 0.001 | − 0.05 | −3.31 | − 0.09– –0.02 | 0.001 | − 0.03 | −2.18 | −0.06– –0.003 | 0.029 |
| Conscientiousness | −0.01 | −1.24 | −0.04–0.009 | 0.214 | ||||||||
| Medical student cohort | 0.11 | 2.46 | 0.02–0.21 | 0.014 | 0.10 | 2.05 | 0.004–0.20 | 0.041 | −0.04 | −0.79 | −0.14–0.06 | 0.425 |
| Life events | −0.12 | −7.96 | −0.14– – 0.09 | < 0.001 | − 0.07 | −4.27 | − 0.10– –0.03 | < 0.001 | − 0.08 | − 4.77 | −0.11– –0.04 | < 0.001 |
| Block 2: Contextual work-related factors | ||||||||||||
| Emotional pressure | −0.30 | −10.25 | −0.36– –0.24 | < 0.001 | −0.07 | −1.70 | −0.16–0.01 | 0.089 | ||||
| Time pressure | −0.34 | −13.85 | −0.39– –0.29 | < 0.001 | 0.006 | 0.16 | −0.07–0.09 | 0.873 | ||||
| Fear of complaints and criticism | −0.22 | −7.96 | −0.28– –0.17 | < 0.001 | 0.04 | 1.02 | −0.03–0.11 | 0.305 | ||||
| Work–home interference | −0.29 | −18.34 | −0.32– –0.26 | < 0.001 | −0.20 | − 8.67 | − 0.25– –0.16 | < 0.001 | ||||
| Number of hours at work per week | −0.004 | −2.70 | − 0.008– − 0.001 | 0.007 | 0.002 | 1.25 | –0.001–0.006 | 0.210 | ||||
| Number of hours asleep when on call | −0.0007 | − 0.18 | − 0.008–0.007 | 0.851 | ||||||||
| Perceived job demands | −0.24 | −14.18 | −0.27– –0.20 | < 0.001 | −0.10 | −4.24 | −0.15– –0.05 | < 0.001 | ||||
| Autonomy | 0.08 | 3.73 | 0.04–0.13 | < 0.001 | −0.04 | −1.58 | −0.09–0.01 | 0.113 | ||||
| Colleague support | 0.08 | 12.30 | 0.07–0.09 | < 0.001 | 0.05 | 7.02 | 0.04–0.07 | < 0.001 | ||||
b = unstandardized regression coefficients; t = t value; CI = confidence interval
aTime T2 was used as a reference in final Model 2 because most of the individual factors and all of the contextual and lifestyle factors were measured repeatedly at T2–T4