Bivariate* n (k)=360 (9) | Parsimonious* n (k)=321 (8) | Multivariate* excluding population n (k)=359 (9) | Multivariate* excluding age N (k)=322 (8) | |||||||||
RR | 95% CI | P value | RR | 95% CI | P value | RR | 95% CI | P value | RR | 95% CI | P value | |
Comorbid MDD† | 1.91 | 1.14 to 3.21 | 0.015* | 1.55 | 0.91 to 2.65 | 0.110 | 1.77 | 1.05 to 2.99 | 0.032§ | 1.70 | 0.99 to 2.90 | 0.052 |
Age‡ | – | – | – | 0.97 | 0.96 to 0.99 | 0.004§ | 0.98 | 0.96 to 0.99 | 0.006§ | – | – | – |
Population | – | – | – | 1.87 | 1.24 to 2.84 | 0.003§ | – | – | – | 1.73 | 1.15 to 2.62 | 0.009§ |
*Models were multilevel.
†Major depressive disorder.
‡Continuous.
§p < 0.05
RR, rate ratio.