Fig. 1

The 10-Year CVD Risk in all participants by groups of lung function parameters using analysis of covariance. Abbreviations: FEV₁, forced expiratory volume in 1 s; FVC, forced vital capacity; FEV₁/FVC, the ratio of FEV₁ to FVC. ^* Significant differences between L4/Q4 and any other lung function group at P < 0.05; ^# significant differences between L3/Q3 and any other lung function group at P < 0.05; ^§ significant differences between L2/Q2 and any other lung function group at P < 0.05. Adjusted for gender (male/female), height (continuous, m), weight (continuous, kg), abdominal obesity (yes/no), smoking amount (continuous, pack-year), drinking status (drinker/nondrinker), low density lipoprotein (continuous, mmol/L), physical activity (active/inactive), city (Wuhan/Zhuhai) and education levels (middle school or below, high school, university or above)