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Table 1 Sample characteristic (in 2002) according to tea consumption (in 2007) among Chinese adults a (N= 1109)

From: Tea consumption is inversely related to 5-year blood pressure change among adults in Jiangsu, China: a cross-sectional study

 

Total tea

Green tea

Black tea

 

0 g/day (N= 846)

<10 g/day (7.1 g/dayb, N= 148)

>10 g/day (14.3 g/day, N= 115)

P

0 g/day (N= 900)

<10 g/day (7.1 g/day, N= 139)

>10 g/day (14.3 g/day, N= 70)

P

0 g/day (N= 1018)

<10 g/day (7.1 g/day, N= 51)

>10 g/day (14.3 g/day, N= 40)

P

Age

48.9

50.2

50.0

0.37

48.9

50.8

49.7

0.11

49.1

50.4

49.8

0.74

(years)

(0.5)

(1.1)

(1.1)

 

(0.4)

(1.1)

(1.4)

 

(0.4)

(1.8)

(2.1)

 

Men (%)

32.86

69.59

79.13

<0.01

35.2

71.2

80.0

<0.01

39.8

68.6

80.0

<0.01

Urban (%)

11.8

13.5

17.4

0.23

11.3

18.7

17.1

0.03

12.77

15.69

5.00

0.28

Low education (%)

55.2

50.7

43.5

0.01

55.0

48.9

41.4

<0.01

53.9

49.0

45.0

0.16

Manual job (%)

55.6

45.9

40.0

<0.01

54.8

43.2

44.3

0.01

53.6

47.1

35.0

0.05

No active commuting (%)

39.5

43.9

45.2

0.06

40.2

43.9

40.0

0.06

40.1

43.1

52.5

0.58

No leisure time physical activity (%)

92.8

87.8

85.2

0.03

92.7

85.6

85.7

0.03

91.9

84.3

87.5

0.03

Sleeping < 7 h/day

11.8

12.4

15.9

<0.01

12.2

11.8

14.7

0.02

12.0

13.7

17.5

0.09

Sedentary activity < 1 h/day

18.8

6.8

5.2

<0.01

18.2

6.5

2.9

<0.01

16.5

3.9

12.5

<0.01

Smoker (%)

19.9

51.4

58.3

<0.01

22.1

48.9

62.9

<0.01

25.7

51.0

57.5

<0.01

Alcohol drinker (%)

20.9

40.8

40.9

<0.01

22.7

36.2

42.9

<0.01

24.4

37.3

42.5

<0.01

Weight

59.6

60.6

60.7

0.37

59.5

61.4

61.5 (1.2)

0.04

59.97

58.53

58.48

0.38

(kg)c

(0.3)

(0.9)

(0.9)

 

(0.3)

(0.8)

  

(0.3)

(1.3)

(1.5)

 

Waist circumference

78.5

79.5

79.8

0.26

78.4

80.3

80.3

0.05

78.86

77.59

78.24

0.60

(cm)c

(0.3)

(0.8)

(0.9)

 

(0.3)

(0.8)

(1.1)

 

(0.3)

(1.3)

(1.5)

 

Central obesity (%)e

31.7

27.7

22.6

0.10

30.6

30.2

25.7

0.69

31.5

17.7

15.0

0.01

Obesity (%) (BMI ≥ 28 kg/m2)

10.3

8.1

7.8

0.43

10.0

7.9

10.0

0.21

10.3

2.0

5.0

0.21

BMI

23.3

23.7

23.8

0.30

23.3

24.0

24.0

0.04

23.4

22.8

23.4

0.36

(kg/m2)c

(0.1)

(0.3)

(0.3)

 

(0.1)

(0.3)

(0.4)

 

(0.1)

(0.5)

(0.5)

 

Hypertension (%)

29.7

37.8

33.9

0.11

29.7

37.4

38.6

0.07

31.3

37.3

20.0

0.20

SBP

126.7

126.5

126.2

0.97

126.5

127.0

127.2

0.93

126.8

125.6

122.0

0.28

(mmHg)c

(0.7)

(1.6)

(1.8)

 

(0.6)

(1.6)

(2.3)

 

(0.6)

(2.7)

(3.0)

 

DBP

79.6

80.3

81.0

0.47

79.5

80.9

82.5

0.06

80.0

81.2

75.6

0.04

(mmHg)c

(0.4)

(0.9)

(1.1)

 

(0.4)

(1.0)

(1.4)

 

(0.4)

(1.6)

(1.8)

 

Energy

2376.5

2260.8

2288.2

0.07

2363.5

2286.3

2333.5

0.40

2361.6

2222.9

2272.3

0.21

(Kcal/day)c

(21.4)

(51.6)

(58.8)

 

(20.6)

(53.3)

(74.6)

 

(19.2)

(86.2)

(97.7)

 

Fat

80.1

87.5

87.4

<0.01

80.8

86.5

86.2

0.02

81.0

95.1

84.6

<0.01

(g/day)d

(0.9)

(2.1)

(2.4)

 

(0.8)

(2.2)

(3.1)

 

(0.8)

(3.5)

(4.0)

 

Protein

72.0

72.4

76.9

<0.01

72.1

74.0

75.6

0.09

72.3

71.8

79.9

<0.01

(g/day)d

(0.5)

(1.2)

(1.4)

 

(0.5)

(1.2)

(1.7)

 

(0.4)

(2.0)

(2.3)

 

Carbohydrate

324.6

307.2

306.0

<0.01

321.8

314.8

312.3

0.27

322.9 (1.9)

283.4

302.4

<0.01

(g/day)d

(2.1)

(5.2)

(5.9)

 

(2.1)

(5.4)

(7.5)

  

(8.6)

(9.7)

 

Fibre

12.6

9.6

9.5

<0.01

12.5

9.8

8.7 (1.1)

<0.01

12.0

10.5

10.5

0.30

(g/day)d

(0.3)

(0.7)

(0.8)

 

(0.3)

(0.8)

  

(0.3)

(1.3)

(1.4)

 

Sodium

6.7

6.9

6.8

0.89

6.8

6.7

6.8

0.99

6.7

7.3

6.8

0.66

(g/day)d

(0.1)

(0.4)

(0.4)

 

(0.1)

(0.4)

(0.5)

 

(0.1)

(0.6)

(0.7)

 
  1. aMean(SE), nutrients and alcohol intake were calculated from weighted food records, other food intakes were calculated from food frequency questionnaire.
  2. bMedian tea consumption. cAdjusted for age and sex. dAdjusted for age and sex and energy intake. eBased on IDF definition for Chinese population.
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Nutrition Journal

ISSN: 1475-2891

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