Table 1. Interrupted time series analysis of yearly smoking prevalence during the 2006–2018 economic crisis (recession) among Brazilians aged 18 years and older residing in one of 27 capital cities, according to gender.

	Overall population	Men	Women
Yearly average percentage variation of smoking prevalence in the 2006–2014 period	-0.63^a	-0.79^a	-0.49^a
	[-0.76 to -0.51]	[-0.94 to -0.64]	[-0.68 to -0.31]
Yearly average percentage variation of smoking prevalence in the 2015–2018 period	-0.36^a	-0.12	-0.45^a
	[-0.62 to -0.10]	[-0.44 to 0.18]	[-0.60 to -0.29]
Level change in 2015 vs predicted level without economic crisis	0.19	0.13	-0.03
	[-0.39 to 0.77]	[-0.92 to 1.19]	[-1.03 to 0.95]
Difference in trends (2015–2018 period – 2006-2014 period)	0.27	0.66^a	0.04
Difference in trends (2015–2018 period – 2006-2014 period)	[-0.02 to 0.58]	[0.33 to 1.00]	[-0.26 to 0.34]

95% confidence intervals in brackets.

^a p < 0.05.

Models considered autocorrelation and used robust standard errors to account for repeated measures.