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Table 2 Association between tea consumption and NAFLD *

From: Daily tea drinking is not associated with newly diagnosed non-alcoholic fatty liver disease in Chinese adults: the Tianjin chronic low-grade systemic inflammation and health cohort study

Tea

Categories of tea consumption (n = 19,350)

P for trend a

Almost never

<  1 cup/week

1–6 cups/week

≥ 1 cup/day

Green tea

 No. of participants

6716

4969

4764

2910

 

 No. of NAFLD patients (%)

1198 (17.84)

881 (17.73)

976 (20.49)

706 (24.34)

 

  Crude model

Ref

0.99 (0.90, 1.09) b

1.19 (1.08, 1.30)

1.48 (1.33, 1.65)

< 0.0001

  Adjusted model 1 c

Ref

0.99 (0.88, 1.12)

0.98 (0.87, 1.11)

0.99 (0.86, 1.13)

0.77

  Adjusted model 2 d

Ref

1.05 (0.90, 1.22)

1.04 (0.89, 1.20)

1.04 (0.88, 1.22)

0.65

Oolong tea

 No. of participants

9083

4937

3551

1779

 

 No. of NAFLD patients (%)

1669 (18.37)

895 (18.13)

749 (21.09)

448 (25.18)

 

  Crude model

Ref

0.98 (0.90, 1.08)

1.19 (1.08, 1.31)

1.50 (1.33, 1.68)

< 0.0001

  Adjusted model 1 c

Ref

0.94 (0.84, 1.05)

0.95 (0.84, 1.07)

1.05 (0.90, 1.22)

0.99

  Adjusted model 2 d

Ref

0.92 (0.79, 1.07)

0.97 (0.83, 1.15)

1.04 (0.86, 1.25)

0.80

Black tea

 No. of participants

9227

5154

3350

1619

 

 No. of NAFLD patients (%)

1740 (18.86)

968 (18.78)

681 (20.33)

372 (22.98)

 

  Crude model

Ref

1.00 (0.91, 1.09)

1.10 (0.99, 1.21)

1.28 (1.13, 1.46)

< 0.001

  Adjusted model 1 c

Ref

1.04 (0.93, 1.16)

0.90 (0.79, 1.02)

1.04 (0.89, 1.22)

0.57

  Adjusted model 2 d

Ref

1.10 (0.96, 1.26)

0.91 (0.78, 1.07)

0.99 (0.83, 1.19)

0.42

Jasmine tea

 No. of participants

10,736

4764

2341

1509

 

 No. of NAFLD patients (%)

2033 (18.94)

849 (17.82)

515 (22.00)

364 (24.12)

 

  Crude model

Ref

0.93 (0.85, 1.01) b

1.21 (1.08, 1.35)

1.36 (1.20, 1.54)

< 0.001

  Adjusted model 1 c

Ref

0.91 (0.82, 1.02)

0.98 (0.85, 1.12)

0.96 (0.82, 1.13)

0.46

  Adjusted model 2 d

Ref

0.90 (0.79, 1.03)

1.06 (0.90, 1.24)

0.93 (0.78, 1.11)

0.68

  1. * NAFLD, non-alcoholic fatty liver disease;
  2. a Multiple conditional logistic regression analysis
  3. b Odds ratios (95% confidence interval) (all such values)
  4. c Adjusted for age, BMI, and sex
  5. d Adjusted for age, BMI, sex, energy intake (kJ/d), type 2 diabetes, hypertension, hyperlipidaemia, physical activity, educational level, household income, smoking status, drinking status, employment status, family history of CVD, cancer, and diabetes, intake of sweet foods pattern, vegetable pattern and animal foods pattern, and consumption of other two kinds of tea