Table 4.
Geometric means (95% CI) of glycemic and inflammatory parameters by categories of Oolong tea consumptiona
| never or < 1 cup per week | 2-6 cups per week | ≥ 1 cup(s) per day | P trendb | ||
|---|---|---|---|---|---|
| Fasting plasma glucose (mmol/L) | |||||
| Model-1c | 4.84 (4.82 - 4.86) | 4.82 (4.77 - 4.87) | 4.86 (4.81 - 4.92) | 0.591 | |
| Model-2 | 4.75 (4.69 - 4.82) | 4.75 (4.68 - 4.82) | 4.76 (4.68 - 4.83) | 1.000 | |
| HOMA-IR | |||||
| Model-1 | 1.56 (1.51 - 1.60) | 1.56 (1.47 - 1.65) | 1.68 (1.57 - 1.79) | 0.044 | |
| Model-2 | 1.41 (1.32 - 1.50) | 1.40 (1.30 - 1.51) | 1.41 (1.30 - 1.53) | 0.940 | |
| HOMA-beta | |||||
| Model-1 | 102.50 (100.2 - 104.85) | 105.31 (100.28 - 110.60) | 103.70 (98.02 - 109.71) | 0.511 | |
| Model-2 | 103.83 (97.48 - 110.60) | 106.22 (98.69 - 114.32) | 105.89 (97.91 - 114.52) | 0.428 | |
| HbA1c % | |||||
| Model-1 | 5.78 (5.76 - 5.81) | 5.76 (5.71 - 5.80) | 5.81 (5.76 - 5.87) | 0.461 | |
| Model-2 | 5.72 (5.66 - 5.78) | 5.71 (5.64 - 5.78) | 5.73 (5.66 - 5.81) | 0.685 | |
| Adiponectin- high molecular weight (µg/ml) | |||||
| Model-1 | 1.03 (1.00 - 1.06) | 1.04 (0.97 - 1.11) | 0.96 (0.89 - 1.03) | 0.105 | |
| Model-2 | 1.01 (0.93 - 1.09) | 1.04 (0.94 - 1.14) | 0.99 (0.89 - 1.09) | 0.829 | |
| CRP (mg/L) | |||||
| Model-1 | 1.48 (1.41 - 1.55) | 1.46 (1.32 - 1.62) | 1.63 (1.45 - 1.83) | 0.166 | |
| Model-2 | 1.29 (1.14 - 1.45) | 1.30 (1.13 - 1.49) | 1.35 (1.17 - 1.56) | 0.397 | |
a HOMA-IR, homeostatic model assessment-insulin resistance; HOMA-beta, homeostatic model assessment-beta cell function; CRP, C-reactive protein. Numbers of participants differ across outcomes because participants with outlier values (response values > 4 SD from mean) were excluded. Numbers were as follows: fasting plasma glucose: 3058, 585, 431 HOMA-IR: 3087, 588, 433 HOMA-beta: 3080, 588, 427 HbA1c: 2493, 482, 378 HMW adiponectin: 3020, 572, 425 CRP: 3012, 564, 419.
b, c For these footnotes please refer to Table 3