Fig. 2From: The association of asthma duration with body mass index and Weight-Adjusted-Waist index in a nationwide study of the U.S. adultsTrend test for the association between asthma duration and obesity-related indexes. a Trend test for the association between asthma duration and WWI. b Trend test for the association between asthma duration and BMI. *The green squares represents the effect value. The blue line represents the 95% confidence interval of the effect value. *All the covariates were adjustedBack to article page