Associations of tea drinking or green tea drinking with β-cell function and insulin resistance
| Tea drinking | Green tea drinking | |||
| OR (95% CI) | P value | OR (95% CI) | P value | |
| Modified Matsuda index | ||||
| Model 1 | 0.85 (0.72, 1.01) | 0.062 | 0.90 (0.73, 1.11) | 0.344 |
| Model 2 | 0.92 (0.77, 1.09) | 0.34 | 0.99 (0.80, 1.22) | 0.896 |
| HOMA-IR | ||||
| Model 1 | 1.20 (1.02, 1.42) | 0.032 | 1.21 (0.98, 1.49) | 0.074 |
| Model 2 | 1.11 (0.93, 1.32) | 0.252 | 1.13 (0.91, 1.40) | 0.281 |
| HOMA-β | ||||
| Model 1 | 0.91 (0.77, 1.07) | 0.248 | 0.87 (0.70, 1.07) | 0.185 |
| Model 2 | 0.81 (0.68, 0.97) | 0.021 | 0.77 (0.62, 0.96) | 0.019 |
| Stumvoll first-phase index | ||||
| Model 1 | 0.89 (0.75, 1.05) | 0.151 | 0.89 (0.73, 1.10) | 0.284 |
| Model 2 | 0.81 (0.68, 0.97) | 0.02 | 0.82 (0.66, 1.01) | 0.06 |
| Stumvoll second-phase index | ||||
| Model 1 | 0.97 (0.82, 1.15) | 0.736 | 0.94 (0.76, 1.15) | 0.551 |
| Model 2 | 0.89 (0.75, 1.06) | 0.199 | 0.85 (0.69, 1.06) | 0.144 |
Model 1: adjusted for categorical age, gender, categorical body mass index (BMI), alcohol consumption, smoking status, education, family history of diabetes, history of dyslipidemia and physical activity at work.
Model 2: model 1+coffee drinking.
HOMA-IR, homeostasis model assessment of insulin resistance; HOMA-β, homeostasis model assessment of β-cell function.