Unadjusted and adjusted relative risks (aRR) for mental health conditions in Fire Department of the City of New York (FDNY) emergency medical service workers using Poisson regression
| Probable PTSD (n=158) | Probable depression (n=375) | Probable harmful alcohol use (n=67) | ||||
|---|---|---|---|---|---|---|
| Unadjusted | Adjusted* | Unadjusted | Adjusted† | Unadjusted | Adjusted‡ | |
| RR (95% CI) | aRR (95% CI) | RR (95% CI) | aRR (95% CI) | RR (95% CI) | aRR (95% CI) | |
| Arrival group | ||||||
| Group 1: morning of 9/11/2001 | 5.6 (2.9 to 10.9) | 7.0 (3.6 to 13.5) | 2.0 (1.4 to 2.7) | 2.3 (1.6 to 3.1) | 2.6 (1.0 to 6.6)§ | 2.4 (0.9 to 6.0) |
| Group 2: afternoon of 9/11/2001 | 3.4 (1.7 to 6.6) | 4.2 (2.2 to 8.2) | 1.5 (1.1 to 2.1) | 1.7 (1.3 to 2.4) | 2.6 (1.1 to 6.4) | 2.5 (1.0 to 6.0)¶ |
| Group 3: 9/12/2001 | 3.6 (1.7 to 7.5) | 4.2 (2.1 to 8.7) | 1.9 (1.3 to 2.8) | 2.2 (1.5 to 3.1) | 2.9 (1.0 to 7.7)** | 2.7 (1.0 to 7.3) |
| Group 4: 9/13/2001–9/24/2001 | 1.7 (0.8 to 3.5) | 2.0 (0.9 to 4.2) | 1.3 (0.9 to 1.8) | 1.4 (1.0 to 2.0)†† | 1.1 (0.4 to 3.2) | 1.1 (0.4 to 3.0) |
| Group 5: 9/25/2001 or later | 2.1 (0.9 to 5.2) | 2.6 (1.1 to 6.2) | 1.2 (0.7 to 1.9) | 1.4 (0.9 to 2.2) | 2.8 (0.9 to 8.1) | 2.7 (0.9 to 7.8) |
| Unexposed | REF | REF | REF | REF | REF | REF |
*Adjusted for gender and age at 9/11.
†Adjusted for gender, age at 9/11 and smoking history.
‡Adjusted for gender.
§Owing to rounding, crude relative risk is significant (p=0.0496).
¶Owing to rounding, adjusted relative risk is significant (p=0.0476).
**Owing to rounding, crude relative risk is significant (p=0.0339).
††Owing to rounding, adjusted relative risk is significant (p=0.0452).
PTSD, post-traumatic stress disorder.