Table 2.

Logistic regression analysis between WWI index with asthma prevalence.

Characteristic	Model 1 OR (95%CI)	Model 2 OR (95%CI)	Model 3 OR (95%CI)
WWI Index	1.09 (1.06,1.12)	1.26 (1.21,1.30)	1.15 (1.11,1.20)
Categories
Tertile 1(7.59-10.38)	1	1	1
Tertile 2(10.38-11.71)	0.93 (0.87,1.00)	1.13 (1.05,1.21)	1.05 (0.97,1.13)
Tertile 3(11.71-15.70)	1.17 (1.10,1.25)	1.52 (1.41,1.64)	1.29 (1.19,1.40)

Model 1 was adjusted for no covariates;

Model 2 was adjusted for race, gender, age, marital status and education;

Model3 was adjusted for covariates in Model 2+diabetes, blood pressure, asthma, PIR, total water, total kcal, total sugar, smoked, physical activity, alcohol use,serum cholesterol, serum uric acid, coronary artery disease, cancers and serum glucose were adjusted.