Hazard ratios from Cox regression analysis— tricyclic antidepressants (TCAs); selective serotonin reuptake inhibitors (SSRIs)
| Variable | Hazard ratio (95% CI)* | p value |
|---|---|---|
| *Hazard ratio is the relative risk of discontinuing treatment. | ||
| Age (y) | 1.07 (1.06 to 1.08) | <0.001 |
| Sex (girls as reference) | 0.91 (0.87 to 0.96) | 0.001 |
| Drug type | ||
| Non-fluoxetine SSRIs (fluoxetine as reference) | 1.01 (0.96 to 1.07) | NS |
| TCAs (fluoxetine as reference) | 1.40 (1.32 to 1.47) | <0.001 |