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Table 1 Characteristics of the study participants in Fangshan District, Beijing, China

From: Prevalence of cardiovascular disease and risk factors in a rural district of Beijing, China: a population-based survey of 58,308 residents

Characteristics

Total

Males

Females

P value*

 

(N = 58,308)

(N = 20,362)

(N = 37,946)

 

Age (years), (mean ± SD)

56.3 ± 9.9

57.1 ± 10.2

55.9 ± 9.8

< 0.001

SBP (mmHg), (mean ± SD)

133.9 ± 17.9

134.4 ± 17.6

133.6 ± 18.0

< 0.001

DBP (mmHg), (mean ± SD)

84.1 ± 10.4

85.1 ± 10.8

83.6 ± 10.2

< 0.001

Weight (kg), (mean ± SD)

67.4 ± 11.4

71.6 ± 11.7

65.3 ± 10.6

< 0.001

Height (cm), (mean ± SD)

160.3 ± 7.9

167.2 ± 6.4

156.6 ± 5.9

< 0.001

BMI (kg/m2), (mean ± SD)

26.2 ± 3.8

25.5 ± 3.6

26.6 ± 3.9

< 0.001

BP classification (%), (95% CI)

   

< 0.001

   Normotension

19.3 (16.6, 23.1)

17.8 (15.2, 20.9)

20.7 (17.4, 24.4)

-

   Prehypertension

37.8 (36.0, 39.7)

37.7 (35.9, 39.6)

37.9 (36.0, 39.9)

-

   Stage 1 hypertension

28.6 (26.3, 30.9)

29.2 (27.1, 31.4)

28.2 (25.8, 30.7)

-

   Stage 2 hypertension

13.9 (12.0, 16.1)

15.2 (13.2, 17.5)

13.2 (11.4, 15.3)

-

Hypertension (%), (95% CI)

47.2 (44.5, 49.9)

48.7 (45.6, 51.8)

46.4 (43.8, 49.1)

0.004

Diabetes (%), (95% CI)

8.6 (7.4, 10.0)

7.8 (6.5, 9.3)

9.0 (7.8, 10.4)

< 0.001

Overweight (%), (95% CI)

43.2 (41.7, 44.8)

41.2 (38.9, 43.7)

44.3 (43.1, 45.6)

< 0.001

Obesity (%), (95% CI)

15.1 (13.8, 16.6)

10.7 (9.4, 12.1)

17.5 (16.0, 19.1)

< 0.001

  1. SBP systolic blood pressure; DBP diastolic blood pressure; BP blood pressure; BMI body mass index; SD standard deviation; CI confidence interval. BP classification: normotension (SBP < 120 mmHg and DBP < 80 mmHg); prehypertension (SBP of 120-139 mmHg or DBP of 80-89 mmHg); stage 1 hypertension (SBP of 140-159 mmHg or DBP of 90-99 mmHg); stage 2 hypertension (SBP ≥ 160 mmHg or DBP ≥ 100 mmHg)
  2. Hypertension was defined as SBP ≥ 140 mmHg, or DBP ≥ 90 mmHg, or current use of any antihypertensive medication within two weeks or any combination of the above; diabetes was defined as self-reported current treatment with insulin or oral hypoglycemic agents; overweight was defined as BMI ≥ 25 kg/m2 and obesity as BMI ≥ 30 kg/m2
  3. *Compared between males and females