TABLE 2.
Measure of obesity | Current asthma | |
---|---|---|
|
||
Crude OR (95% CI) | Adjusted OR (95% CI) | |
Model 1: BMI categories | ||
Lean | 1.0 (ref.) | 1.0 (ref.) |
Overweight | 1.01 (0.73–1.38) | 1.11 (0.80–1.55) |
Obese | 2.20 (1.63–2.97) | 2.25 (1.63–3.10) |
Test for trend p-value | <0.001 | <0.001 |
p-value for interaction between BMI and insulin resistance | 0.10 | 0.03 |
Model 2: waist circumference tertiles | ||
1st | 1.0 (ref.) | 1.0 (ref.) |
2nd | 1.19 (0.72–1.95) | 1.38 (0.84–2.29) |
3rd | 2.17 (1.35–3.47) | 2.68 (1.66–4.33) |
Test for trend p-value | <0.001 | <0.001 |
p-value for interaction between waist circumference and insulin resistance | 0.03 | 0.01 |
Model 3: waist-to-height ratio tertiles | ||
1st | 1.0 (ref.) | 1.0 (ref.) |
2nd | 0.97 (0.65–1.44) | 1.10 (0.74–1.64) |
3rd | 2.08 (1.46–2.97) | 2.29 (1.56–3.35) |
Test for trend (p-value) | <0.001 | <0.001 |
p-value for interaction between waist-to-height ratio and insulin resistance | 0.11 | 0.02 |
All models adjust for age, sex, race/ethnicity, poverty income ratio and smoking status.
BMI: body mass index.
Bold odds ratios are statistically significant.