Table 4.
Adjusted odd ratios (ORs) and 95% confidence intervals (CIs) for insulin resistance according to FT4 quartiles.
| Quartile of FT4 levels (mg/dL) | |||||
|---|---|---|---|---|---|
| Q1 | Q2 | Q3 | Q4 | P for trend | |
| Total | |||||
| N | 1602 | 1458 | 1626 | 1555 | |
| Model 1 | 2.17 (1.84–2.57) | 1.62 (1.37–1.93) | 1.33 (1.12–1.58) | 1 (Ref) | <0.001 |
| Model 2 | 1.99 (1.65–2.40) | 1.54 (1.27–1.87) | 1.21 (1.00–1.47) | 1 (Ref) | <0.001 |
| Model 3 | 1.99 (1.61–2.46) | 1.54 (1.24–1.93) | 1.26 (1.01–1.57) | 1 (Ref) | <0.001 |
| NW | |||||
| N | 970 | 945 | 1110 | 1106 | |
| Model 1 | 1.76 (1.37–2.26) | 1.46 (1.13–1.89) | 1.30 (1.01–1.68) | 1 (Ref) | 0.001 |
| Model 2 | 1.85 (1.43–2.40) | 1.48 (1.13–1.94) | 1.21 (0.93–1.57) | 1 (Ref) | <0.001 |
| Model 3 | 1.76 (1.31–2.38) | 1.48 (1.08–2.02) | 1.27 (0.94–1.73) | 1 (Ref) | 0.002 |
| OW/OB | |||||
| N | 632 | 513 | 516 | 449 | |
| Model 1 | 2.23 (1.74–2.87) | 1.60 (1.24–2.08) | 1.30 (1.00–1.69) | 1 (Ref) | <0.001 |
| Model 2 | 2.13 (1.62–2.79) | 1.60 (1.21–2.12) | 1.21 (0.92–1.61) | 1 (Ref) | <0.001 |
| Model 3 | 2.19 (1.62–2.96) | 1.60 (1.17–2.20) | 1.23 (0.90–1.68) | 1 (Ref) | <0.001 |
Model 1: adjusted for age and sex.
Model 2: adjusted for age, sex, BMI, WC, heart rate, hypertension, and hyperlipidemia.
Model 3: adjusted for age, sex, BMI, WC, heart rate, hypertension, hyperlipidemia, regular exercise, and smoking (total, n = 4885; NW, n = 3265; OW/OB, n = 1620).