a decreasing trendP = 0.001
A decreasing trend in current smoking habits in each quantile of the 1996–2000 year (adjusted OR: 0.82, 95% CI: 0.71–0.93, P = 0.001), 2001–2005 year (adjusted OR: 0.70, 95% CI: 0.62–0.80, P = 0.001), 2006–2010 year (adjusted OR: 0.75, 95% CI: 0.67–0.84, P = 0.001), 2011–2015 year (adjusted OR: 0.48, 95% CI: 0.42–0.54, P = 0.001), 2016–2020 year (adjusted OR: 0.48, 95% CI: 0.43–0.54, P = 0.001), and ≥2021 year (adjusted OR: 0.46, 95% CI: 0.40–0.53, P = 0.001) was observed in comparison to the quantile 1991–1995 year.