Table 5

Geometric means (95% CI) of glycemic and inflammatory parameters by categories of green 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)

4.83 (4.78 - 4.88)

4.87 (4.80 - 4.93)

0.575

Model-2

4.75 (4.69 - 4.81)

4.75 (4.68 - 4.82)

4.76 (4.68 - 4.85)

0.687

HOMA-IR

Model-1

1.55 (1.51 - 1.60)

1.60 (1.51 - 1.69)

1.65 (1.53 - 1.78)

0.086

Model-2

1.40 (1.31 - 1.49)

1.43 (1.33 - 1.54)

1.39 (1.28 - 1.51)

0.920

HOMA-beta

Model-1

103.02 (100.69 - 105.4)

103.13 (98.34 - 108.15)

100.17 (93.93 - 106.83)

0.465

Model-2

107.68 (101.1 - 114.69)

105.65 (98.22 - 113.64)

102.65 (94.44 - 111.58)

0.149

HbA1c %

Model-1

5.78 (5.76 - 5.81)

5.75 (5.7 - 5.79)

5.81 (5.74 - 5.87)

0.943

Model-2

5.73 (5.67 -5.79)

5.7 (5.63 - 5.77)

5.74 (5.66 - 5.82)

0.883

Adiponectin High molecular weight (μg/ml)

Model-1

1.03 (1.00 - 1.06)

1.02 (0.96 - 1.09)

0.97 (0.89 - 1.05)

0.162

Model-2

1.01 (0.93 - 1.09)

1.02 (0.92 - 1.11)

1.01 (0.91 - 1.12)

0.920

CRP (mg/L)

Model-1

1.50 (1.43 - 1.57)

1.45 (1.31 - 1.60)

1.42 (1.24 - 1.62)

0.318

Model-2

1.39 (1.23 - 1.56)

1.34 (1.17 - 1.54)

1.22 (1.04 - 1.42)

0.042


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: 3169, 605, 300 HOMA-IR: 3193, 612, 303, HOMA-beta: 3188, 608, 299 HbA1c: 2586, 504, 263 HMW adiponectin: 3112, 602, 303 and CRP: 3091, 603, 301.

b, c For these footnotes please refer to Table 3

Rebello et al. Nutrition Journal 2011 10:61   doi:10.1186/1475-2891-10-61

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