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Table 1 Characteristics and results of univariate Cox regression analysis of a random community sample of people with diabetes in Taiwan (N = 597; 69 stroke cases)

From: A retrospective cohort study on the risk of stroke in relation to a priori health knowledge level among people with type 2 diabetes mellitus in Taiwan

Characteristics

Mean ± SD or number (% in column)

No. of strokes (% in row)

Hazard Ratio

95% CI

P-value

Health knowledgea

 Low (0)

77(12.90%)

16(20.78%)

1

  

 Moderate (1–3)

243(40.7%)

29(11.93%)

0.54

0.30–1.00

0.05

 High (4–15)

277(46.4%)

20(7.22%)

0.32

0.17–0.61

<0.01

Mean (SD) age, years,

51.28(9.17)

54.63(7.64)

1.05

1.02–1.09

<0.01

Gender

 Female

289(48.41%)

31(10.73%)

1

  

 Male

308(51.59%)

34(11.04%)

1.02

0.63–1.66

0.93

BMI

 Underweight (<18.5)

12(2.01%)

1(8.33%)

0.67

0.09–4.99

0.70

 Normal weight (18.5–24)

193(32.33%))

23(11.92%)

1

  

 Overweight (24–27)

182(30.49%)

20(10.99%)

0.92

0.50–1.67

0.78

 Obese (>27)

205(34.34%)

20(9.76%)

0.81

0.44–1.47

0.48

Marital status

 Married/cohabiting

480(80.40%)

44(9.17%)

1

  

 Single

45(7.54%)

6(13.33%)

1.46

0.62–3.43

0.38

 Widowed/divorced/separated

71(11.89%)

15(21.13%)

2.42

1.34–4.34

<0.01

Education

 Low (elementary or below)

274(45.90%)

39(14.23%)

1

  

 Moderate (junior/senior high)

231(38.69%)

18(7.79%)

0.53

0.31–0.93

0.03

 High (college or above)

92(15.41%)

8(8.70%)

0.59

0.28–1.26

0.17

Household income in tertiles

 Low (<US$968/month)

181(30.32%)

22(12.15%)

1

  

 Moderate (US$968–2258/month)

225(37.69%)

27(12%)

0.97

0.55–1.70

0.91

 High (>US$2258/month)

155(25.96%)

14(9.03%)

0.72

0.37–1.40

0.33

Smoking status

 Never

410(68.68%)

37(9.02%)

1

  

 Current

150(25.13%)

25(16.67%)

1.92

1.16–3.20

0.01

 Former

37(6.20%)

3(8.10%)

0.91

0.28–2.94

0.87

Alcohol consumption

 None

406(68.01%)

42(10.34%)

1

  

 Yes

191(31.99%)

23(12.04%)

1.16

0.70–1.93

0.57

Comorbidities

 Hypertension

  No

179(29.98%)

14(7.82%)

1

  

  Yes

418(70.02%)

51(12.2%)

1.58

0.88–2.86

0.13

 Hyperlipidemia

  No

180(30.15%)

14(7.78%)

1

  

  Yes

417(69.85%)

51(12.23%)

1.60

0.89–2.89

0.12

 Atrial fibrillation

  No

584(97.82%)

60(10.27%)

   

  Yes

13(2.18%)

5(38.46%)

4.97

1.99–12.39

<0.01

 Coronary artery disease

  No

401(67.17%)

36(8.98%)

1

  

  Yes

196(32.83%)

29(14.8%)

1.70

1.04–2.78

0.03

 Congestive heart failure

  No

551(92.29%)

55(9.98%)

1

  

  Yes

46(7.71%)

10(21.74%)

2.33

1.19–4.57

0.01

  1. Abbreviations: CI confidence interval, BMI body mass index
  2. aThe dose–response relationship of health knowledge and incident stroke was evaluated by the trend test (HR, 0.57; 95% CI, 0.41–0.79; P for trend < 0.01)