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Table 1 Demographic characteristics of participants

From: Prevalence and control of hypertension among a Community of Elderly Population in Changning District of shanghai: a cross-sectional study

Demographic characteristics

Total

Hypertension

No confirmed hypertension

p value*

(N = 44,978)

(N = 26,946)

(N = 18,032)

n

%

n

%

n

%

Age (Years)

65–

17,348

38.6

9183

34.1

8165

45.3

<0.001

70–

9105

20.2

5557

20.6

3548

19.7

75–

9843

21.9

6456

24

3387

18.8

80–

6347

14.1

4233

15.7

2114

11.7

85–

2335

5.2

1517

5.6

818

4.5

Gender

Male

20,305

45.1

11,936

44.3

8369

46.4

<0.001

Female

24,673

54.9

15,010

55.7

9663

53.6

BMI (kg/m2)

0–

20,190

45.7

10,776

40.7

9414

53.2

<0.001

18.5–

1825

4.1

726

2.7

1099

6.2

24.0–

16,688

37.8

10,864

41.1

5824

32.9

28.0–

5448

12.3

4080

15.4

1368

7.7

Education

University

6621

15

3699

13.9

2922

16.6

<0.001

Senior high school

11,074

25.1

6349

23.9

4725

26.8

Junior high school

14,704

33.3

8794

33.2

5910

33.5

Primary school

8045

18.2

5242

19.8

2803

15.9

No formal education

3713

8.4

2443

9.2

1270

7.2

Dietary habit

Balanced

37,969

84.4

22,559

83.7

15,410

85.5

<0.001

Meatarian

1645

3.7

1015

3.8

630

3.5

Vegetarian

5364

11.9

3372

12.5

1992

11

Salt intake

≤ 6 mg/day

43,766

97.3

26,157

97.1

17,609

97.7

<0.001

> 6 mg/day

1212

2.7

789

2.9

423

2.3

Drinking

Never

29,121

70.8

17,838

72

11,283

69

<0.001

Occasional

8299

20.2

4806

19.4

3493

21.4

Regular

3685

9

2118

8.6

1567

9.6

Diabetes

No

36,207

80.5

20,090

74.6

16,117

89.4

<0.001

Yas

8771

19.5

6856

25.4

1915

10.6

CHD

No

36,866

82

20,790

77.2

16,076

89.2

<0.001

Yas

8112

18

6156

22.8

1956

10.8

Stroke

No

41,800

92.9

24,538

91.1

17,262

95.7

<0.001

Yas

3178

7.1

2408

8.9

770

4.3

  1. *P values represented the comparisons between hypertension and not confirmed hypertension from chi-square tests