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Table 1 Baseline characteristics of subjects

From: Analyzing the association between fish consumption and osteoporosis in a sample of Chinese men

Variable

Total sample

Frequency of fish food intake a

P value

Group 1

Group 2

Group 3

Group 4

Demographic information

N

1092

93

671

241

87

 Age

64.11 ± 9.77

64.1 ± 10.32

64.62 ± 9.81

63.71 ± 9.53

61.28 ± 9.21

0.023

 Height

168.16 ± 5.61

167.97 ± 6.07

167.97 ± 4.75

167.35 ± 6.73

170.58 ± 6.48

0.440

 Weight

67.96 ± 11.94

65.78 ± 9.91

67.23 ± 9.21

69.4 ± 19.55

71.42 ± 7.71

0.581

Lifestyle

 Smoking

397 (36.39%)

46 (49.46%)

237 (35.37%)

80 (33.2%)

34 (39.08%)

0.037

 Drink intake

333 (30.58%)

30 (32.26%)

192 (28.66%)

78 (32.5%)

33 (38.37%)

0.244

 Excise

705 (64.56%)

50 (53.76%)

423 (63.04%)

175 (72.61%)

57 (65.52%)

0.006

 Education

299 (27.38%)

25 (26.88%)

170 (25.34%)

75 (31.12%)

29 (33.33%)

<0.001

 Oil

20.22 ± 10.13

21.25 ± 10.74

20.13 ± 9.76

19.55 ± 10.37

21.64 ± 11.48

0.286

Medical history

 HTN

494 (45.78%)

38 (40.86%)

311 (46.77%)

112 (47.66%)

33 (38.37%)

0.333

 CAD

108 (10.29%)

9 (10.11%)

66 (10.09%)

24 (10.62%)

9 (11.11%)

0.990

 DM

104 (9.73%)

8 (8.7%)

68 (10.3%)

20 (8.58%)

8 (9.52%)

0.870

 Gout

38 (3.56%)

3 (3.3%)

19 (2.9%)

12 (5.11%)

4 (4.65%)

0.424

 RA

37 (3.43%)

5 (5.38%)

21 (3.17%)

8 (3.38%)

3 (3.49%)

0.753

Medicine history

 Vitamin C yes %

115 (10.53%)

11 (11.83%)

65 (9.69%)

24 (9.96%)

15 (17.24%)

0.178

 Vitamin D yes %

29 (2.66%)

1 (1.08%)

20 (2.98%)

4 (1.66%)

4 (4.6%)

0.338

Outcome

T score

−1.23 ± 0.91

−1.36 ± 1.05

−1.23 ± 0.92

−1.26 ± 0.82

−0.97 ± 0.89

0.024

 OP

96 (8.79%)

15 (15.96%)

61 (9.10%)

15 (6.22%)

5 (5.75%)

0.028

  1. HTN hypertension, CAD coronary artery disease, DM diabetes mellitus, RA rheumatoid arthritis, OP osteoporosis
  2. aFrequency of fish food intake were categorized by group 1: seldom, group 2: once or twice per week, group 3: once per 2 days, and group 4: always