Table 1 Random effects meta-regression analysis of studies examining the effect of smoke-free legislation on acute myocardial infarction
Variable | Univariate model | Multivariate model | ||
|---|---|---|---|---|
| Â | Coefficient (95% CI) | p value | Coefficient (95% CI) | p value |
Study population | Â | Â | Â | Â |
≥500 000 |  |  |  |  |
<500 000 | 0.060(−0.023 to 0.142) | 0.157 | 0.048(−0.022 to 0.118) | 0.176 |
Study location | Â | Â | Â | Â |
US | Â | Â | Â | Â |
Non-US | 0.133(0.057 to 0.209) | 0.001 | 0.124(0.049 to 0.199) | 0.001 |
Publication Year | −0.018(−0.042 to 0.006) | 0.134 | −0.005(−0.028 to 0.018) | 0.683 |
Smoking decrease | −0.028(−0.052 to-0.003) | 0.028 | −0.027(−0.049 to −0.006) | 0.014 |