Table 3.
Cross-county associations between suicide rates (total and method-specific) and rates of household firearm ownership and antidepressants prescription, 2001-2005
| All suicide | Firearm suicide | Non-firearm suicide | |||||||
|---|---|---|---|---|---|---|---|---|---|
| IRR* | 95% CI | P-Value | IRR* | 95% CI | P-Value | IRR* | 95% CI | P-Value | |
| Multivariate analyses | |||||||||
| Household firearm ownership | 1.23 | (1.18, 1.28) | <.0001 | 1.60 | (1.51, 1.69) | <.0001 | 1.00 | (0.95, 1.04) | 0.8409 |
| Antidepressant prescription rate | 1.01 | (0.97, 1.04) | 0.6745 | 1.02 | (0.97, 1.07) | 0.5214 | 1.00 | (0.96, 1.04) | 0.9767 |
| Rural urban continuum code | 0.98 | (0.94, 1.02) | 0.3563 | 0.92 | (0.87, 0.97) | 0.0016 | 1.02 | (0.97, 1.07) | 0.3789 |
| Median income | 0.93 | (0.89, 0.96) | 0.0001 | 0.88 | (0.83, 0.93) | <.0001 | 0.97 | (0.92, 1.01) | 0.1738 |
| Unemployment rate | 0.97 | (0.93, 1.00) | 0.0681 | 0.97 | (0.92, 1.03) | 0.3064 | 0.95 | (0.90, 0.99) | 0.0281 |
*IRR’s for Household Firearm Ownership (Antidepressant Prescription Rate) and Antidepressant Prescriptions are the relative increase in suicides for one standard deviation increase away from the mean rate.
Abbreviations: IRR, Incidence Rate Ratio; CI, Confidence Intervals.