Table 3.
Subgroup analysis: hazard ratio between groups on major depressive episode (MDE) onset stratified by K6 score (prespecified)
| N | Person‐weeks observed | Case (N) | Incident rate (per week) | Survival time Mean (SE) | Hazard ratio | 95% CI low | 95% CI high | |
|---|---|---|---|---|---|---|---|---|
| K6 low (≤4) | ||||||||
| iCBT program | 1159 | 31 172 | 15 | 0.048 | 56.28 (0.18) | 1.58 | 0.71 | 3.52 |
| Control | 1160 | 33 162 | 10 | 0.030 | 60.50 (0.16) | 1.00 | – | – |
| Total | 2319 | 64 334 | 25 | 0.039 | 60.36 (0.13) | |||
| K6 high (≥5) | ||||||||
| iCBT program | 1350 | 34 457 | 95 | 0.276 | 56.66 (0.43) | 1.04 | 0.78 | 1.37 |
| Control | 1348 | 37 111 | 99 | 0.267 | 57.58 (0.45) | 1.00 | – | – |
| Total | 2698 | 71 568 | 194 | 0.271 | 57.58 (0.31) | |||