Fig. 3From: Trends in the distribution of socioeconomic inequalities in smoking and cessation: evidence among adults aged 18 ~ 59 from China Family Panel Studies dataTrends in adjusted smoking intensity (cigarette consumption) by socioeconomic quartile and gender. The prevalence was adjusted by SES, age, residency, and marital status; quartile 1 refers to the poorest quartile, and quartile 4 refers to the wealthiest quartileBack to article page