Table 3.
Associations Between State Tobacco Policy Index (Model C in Table 1) and Suicide Among Adults by Age Group and Demographic Smoking Probability Quartile
| Estimated smoking prevalencea | OR (95% CI) | p value | |
|---|---|---|---|
| By age group (year) | |||
| 18–29 | 24.9% | 0.882 (0.843, 0.928) | <.001 |
| 30–40 | 25.1% | 0.849 (0.809, 0.903) | <.001 |
| 41–51 | 25.1% | 0.884 (0.841, 0.931) | <.001 |
| 52–65 | 20.4% | 0.950 (0.901, 1.000) | .056 |
| >65 | 9.7% | 0.972 (0.929, 1.015) | .223 |
| By smoking probability quartileb | |||
| Fourth quartile | 29.7% | 0.850 (0.794, 0.909) | .003 |
| Third quartile | 26.2% | 0.917 (0.877, 0.966) | .022 |
| Second quartile | 20.7% | 0.924 (0.871, 0.990) | .001 |
| First quartile | 10.8% | 0.935 (0.899, 0.979) | <.001 |
Note. All models include state and year as unordered categorical fixed effects in addition to individual and state-level covariates described in Table 1. OR = odds ratio; CI = confidence interval.
aSmoking prevalence estimates from similar demographic group in the TUS-CPS survey.
bSee supplementary material for further information on derivation of smoking probability quartiles and on TUS-CPS.