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Table 1 Baseline characteristics of the study population

From: The prevalence, incidence, management and risks of atrial fibrillation in an elderly Chinese population: a prospective study

Characteristic

Men

Women

P

(n = 1718)

(n = 2204)

Age, years

68.7 ± 7.1

69.5 ± 7.4

0.002

Body mass index, kg/m2

23.5 ± 3.5

23.8 ± 3.7

0.006

Systolic blood pressure, mm Hg

137.4 ± 19.9

138.2 ± 19.7

0.23

Diastolic blood pressure, mm Hg

80.3 ± 10.9

78.7 ± 10.5

<0.0001

Pulse rate, beats/min

74.6 ± 12.0

77.4 ± 11.7

<0.0001

Serum total cholesterol, mmol/l

5.3 ± 1.5

5.5 ± 1.5

<0.0001

Serum triglycerides, mmol/l

1.5 ± 0.8

1.7 ± 0.8

<0.0001

Serum creatinine, μmol/l

90.5 ± 31.3

86.0 ± 27.5

<0.0001

Fasting plasma glucose, mmol/l

5.2 ± 1.2

5.4 ± 1.3

<0.0001

Current smoking, n (%)

909 (52.9)

48 (2.2)

<0.0001

Alcohol intake, n (%)

627 (36.5)

30 (1.4)

<0.0001

Hypertension, n (%)

1031 (60.0)

1313 (59.6)

0.78

Use of antihypertensive drugs, n (%)

685 (39.9)

908 (41.2)

0.40

Diabetes mellitus, n (%)

116 (6.8)

183 (8.3)

0.07

Antidiabetic treatment, n (%)

61 (3.6)

91 (4.1)

0.35

History of cardiovascular disease

   

 Coronary heart disease, n (%)

10 (0.6)

6 (0.3)

0.13

 Valvular heart disease, n (%)

1 (0.1)

0 (0)

0.26

Prevalence of atrial fibrillation, n (%)

34 (2.0)

36 (1.6)

0.42

CHADS2 score ≥1 point, n (%)

1191 (69.3)

1531 (69.5)

0.92

  1. Values are mean ± SD, or number (%) of subjects. For definitions of hypertension, diabetes mellitus, coronary heart disease, valvular heart disease, atrial fibrillation, and CHADS2 score, see Methods