*The variables adjusted in each primary study were shown in Table S1. Subgroup meta-analysis of uric acid levels and adjusted risk of incident hypertension*.
As part of the China National Health Survey, the objective of this study was to explore the prevalence, patterns, and influencing factors of smoking, and understand reasons for smoking cessation among
*Adjustments were made for age, marital status, education, employment and rural/urban residence. †Adjusted RII could not be obtained due to the reduced number of smokers within some of the categories
