Table 4.
Counting Process Analysisa of Factors Associated With Incidence of Recurrent Self-Harmb in the Cohort: Overall and by TF/TM Status (N=6,327)
| Participant characteristics | Overall cohort HR (95% CI) |
TF cohort HR (95% CI) |
TM cohort HR (95% CI) |
|---|---|---|---|
| TF/TM status | |||
| TF | 1.00 (ref) | NA | NA |
| TM | 0.93 (0.70, 1.25) | NA | NA |
| Age at the end of last event, years | |||
| >45 | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |
| 36–45 | 3.00 (1.69, 5.32) | 4.53 (2.28, 9.02) | 1.34 (0.50, 3.65) |
| 26–35 | 3.75 (2.00, 7.03) | 3.76 (1.78, 7.95) | 3.40 (1.27, 9.12) |
| 18–25 | 2.87 (1.65, 4.97) | 3.57 (1.77, 7.21) | 2.13 (0.90, 5.03) |
| 3–17 | 6.31 (3.75, 10.62) | 6.00 (3.11, 11.59) | 5.66 (2.46, 12.98) |
| Number of mental health diagnoses at baselinec | |||
| None | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |
| 1–2 | 2.43 (1.68, 3.51) | 2.17 (1.36, 3.48) | 2.92 (1.64, 5.22) |
| >2 | 2.46 (1.60, 3.77) | 2.02 (1.14, 3.61) | 3.25 (1.74, 6.05) |
| History of suicidal ideation or self-harm at baselined | |||
| No | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |
| Yes | 9.15 (6.52, 12.83) | 10.89 (6.91, 17.14) | 7.79 (4.95, 12.25) |
a
Stratified by race/ethnicity and study site (KPNC vs Other).
b
Includes any diagnosis of self-inflicted injury, possibly self-inflicted injury, and self-inflicted injury/poisoning.
c
Mental health diagnoses baseline refers to diagnoses that occurred on or before index date.
d
Suicidal ideation or self-harm baseline refers to events that occurred before each event.
TF, transfeminine; TM, transmasculine; HR, hazard ratio; NA, not applicable.