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Table 1 Baseline characteristics of study participants based on the tertiles of tea and coffee intake

From: Tea and coffee consumption and the 15-Year risk of cardiovascular events: the Isfahan cohort study (ICS)

Variable

Tea intake

P

Coffee intake

P

T1 (n = 1434)

T2 (n = 2342)

T3 (1472)

No (n = 5167)

Yes (n = 81)

Tea intake (cups/week)

2.58 ± 0.64

5.11 ± 0.87

9.49 ± 1.95

< 0.001

5.65 ± 2.89

4.98 ± 3.02

0.036

Coffee intake (cups//week)

1.61 ± 1.10

2.20 ± 2.02

1.35 ± 0.75

0.107

0.00 ± 0.00

1.73 ± 1.41

 

Age, years (mean ± SD)

50.67 ± 11.81

50.90 ± 11.72

50.56 ± 11.39

0.699

50.80 ± 11.68

47.01 ± 8.75

0.012

Sex (Male), n (%)

570 (39.7)

1099 (46.9)

852 (57.9)

< 0.001

2482 (48.0)

39 (48.1)

0.984

Married, n (%)

1305 (91.0)

2111 (90.1)

1364 (92.7)

0.028

4706 (91.1)

74 (91.4)

0.930

Education, n (%)

   

< 0.001

  

< 0.001

 0–5 years

972 (67.9)

1653 (70.7)

1113 (75.7)

3699 (71.7)

39 (48.1)

 6–12 years

368 (25.7)

529 (22.6)

283 (19.2)

1147 (22.2)

33 (40.7)

 >12 years

91 (6.4)

156 (6.7)

75 (5.1)

313 (6.1)

9 (11.1)

Smoking status, n (%)

   

< 0.001

  

0.859

 Never

1215 (84.7)

1877 (80.1)

1032 (70.1)

4061 (78.6)

63 (77.8)

 Ever smoking

219 (15.3)

465 (19.9)

440 (29.9)

1106 (21.4)

18 (22.2)

Physical activity (METs-minute/day)

808.46 ± 524.35

856.81 ± 536.78

930.75 ± 569.76

< 0.001

864.74 ± 543.80

1029.89 ± 583.16

0.007

BMI (kg/m2)

27.28 ± 4.63

26.87 ± 4.62

26.28 ± 4.66

< 0.001

26.81 ± 4.66

27.07 ± 4.38

0.756

WC (cm)

95.82 ± 12.02

95.04 ± 12.17

93.44 ± 12.39

< 0.001

94.81 ± 12.24

94.37 ± 11.30

0.692

SBP (mmHg)

89.53 ± 33.37

88.36 ± 32.48

87.91 ± 32.33

0.001

121.75 ± 20.93

121.16 ± 22.59

0.616

DBP (mmHg)

79.09 ± 12.06

78.74 ± 11.35

77.49 ± 11.25

< 0.001

78.49 ± 11.55

77.94 ± 10.58

0.533

FBG (mg/dl)

89.53 ± 33.37

88.36 ± 32.48

87.91 ± 32.33

0.454

88.57 ± 32.71

87.46 ± 31.05

0.856

TC (mg/dl)

215.37 ± 50.42

212.33 ± 49.24

209.89 ± 51.62

0.026

212.48 ± 50.23

211.80 ± 53.39

0.587

LDL-C (mg/dl)

130.07 ± 42.74

128.57 ± 42.16

126.70 ± 42.64

0.137

128.44 ± 42.38

128.88 ± 47.53

0.616

HDL-C (mg/dl)

47.73 ± 10.70

46.60 ± 10.39

46.70 ± 10.27

0.006

46.91 ± 10.46

48.30 ± 10.13

0.202

TG (mg/dl)

198.59 ± 127.77

194.54 ± 116.32

188.02 ± 116.30

0.075

193.78 ± 119.08

195.94 ± 149.73

0.609

Weight status, n (%)

   

< 0.001

  

0.568

 Underweight (BMI < 18.5)

17 (1.2)

44 (1.9)

35 (2.4)

96 (1.9)

0 (0)

 Normal (BMI = 18.5-24.99)

446 (31.3)

795 (34.2)

582 (39.9)

1792 (35.0)

31 (38.3)

 Overweight (BMI = 25-29.99)

594 (41.7)

971 (41.8)

561 (38.5)

2092 (40.8)

34 (42.0)

 Obesity (BMI ≥ 30)

366 (25.7)

512 (22.0)

280 (19.2)

1142 (22.3)

16 (19.8)

Abdominal obesity, n (%)

789 (55.2)

1160 (49.8)

596 (40.6)

< 0.001

2508 (48.7)

37 (45.7)

0.587

Hypertension, n (%)

438 (30.5)

668 (28.5)

357 (24.3)

0.001

1442 (27.9)

21 (25.9)

0.693

Diabetes Mellitus, n (%)

141 (9.8)

193 (8.2)

110 (7.5)

0.064

438 (8.5)

6 (7.4)

0.731

Hypercholesterolemia, n (%)

504 (35.1)

767 (32.7)

462 (31.4)

0.091

1706 (33.0)

27 (33.3)

0.952

Family history of CVD, n (%)

172 (12.5)

283 (12.7)

150 (10.7)

0.193

596 (12.1)

9 (11.3)

0.819

  1. Abbreviations: T = tertile; P = p-value for trend; BMI = body mass index; WC = waist circumference; SBP = systolic blood pressure; DBP = diastolic blood pressure; FBG = fasting blood glucose; TC = total-cholesterol; LDL-C = low-density lipoprotein-cholesterol; HDL-C = low-density lipoprotein-cholesterol