To estimate the effects of fire safe cigarette laws on fire mortality and cigarette-related fires in the USA.Methods
We examined the gradual implementation of the laws to identify their average effects, using difference-in-differences analysis to account for common year effects, time-invariant state effects, state-specific trends and observable time-varying state-level covariates.Results
We found no statistically significant effects on all-cause fire mortality, residential fire mortality or cigarette-caused fire rates. The estimates for cigarette-caused fire deaths were significant under some specifications, but were not robust to the inclusion of state-specific trends or comparisons to effects on other cause-determined fires.Conclusions
Given the mixed state of our results, we conclude that previous claims regarding the effects of fire safe cigarette laws may be premature.