Table 2.
Test of fit of linear, quadratic and cubic associations between age and burnout (Salveo Study)
| Total (n = 2073) | Men (n = 1065) | Women (n = 1008) | Gender interaction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Δχ2 | df | P value | Δχ2 | df | P value | Δχ2 | df | P value | Δχ2 | df | P value | |
| Exhaustion | ||||||||||||
| Linear | 50.74 | 1 | <0.001 | 22.85 | 1 | <0.001 | 30.26 | 1 | <0.001 | 2.73 | 1 | NS |
| Quadratic | 0.00 | 1 | NS | 0.20 | 1 | NS | 0.20 | 1 | NS | 1.08 | 1 | NS |
| Cubic | 8.27 | 1 | <0.01 | 3.01 | 1 | NS | 6.29 | 1 | <0.05 | 9.23 | 1 | <0.01 |
| Cynicism | ||||||||||||
| Linear | 69.92 | 1 | <0.001 | 25.25 | 1 | <0.001 | 42.70 | 1 | <0.001 | 0.37 | 1 | NS |
| Quadratic | 0.18 | 1 | NS | 1.08 | 1 | NS | 1.26 | 1 | NS | 2.88 | 1 | NS |
| Cubic | 1.32 | 1 | NS | 0.02 | 1 | NS | 6.14 | 1 | <0.05 | 5.24 | 1 | <0.05 |
| Professional efficacy (reverse-coded) | ||||||||||||
| Linear | 56.25 | 1 | <0.001 | 28.32 | 1 | <0.001 | 29.99 | 1 | <0.001 | 3.94 | 1 | <0.05 |
| Quadratic | 0.97 | 1 | NS | 0.09 | 1 | NS | 2.70 | 1 | NS | 2.32 | 1 | NS |
| Cubic | 0.25 | 1 | NS | 0.14 | 1 | NS | 3.27 | 1 | NS | 2.94 | 1 | NS |
| Total burnout | ||||||||||||
| Linear | 63.19 | 1 | <0.001 | 32.81 | 1 | <0.001 | 30.72 | 1 | <0.001 | 2.96 | 1 | NS |
| Quadratic | 0.06 | 1 | NS | 0.01 | 1 | NS | 0.80 | 1 | NS | 0.54 | 1 | NS |
| Cubic | 4.21 | 1 | <0.05 | 0.41 | 1 | NS | 7.83 | 1 | <0.01 | 8.12 | 1 | <0.01 |
Adjusted for marital status, parental status, education level and number of working hours. Δχ2, difference in chi-square; df, degrees of freedom; NS, non-significant.