Table 1 Demographic characteristic of participants.

From: Mediating role of depressive symptoms on the relationship between sleep duration and cognitive function

Variables

Total (N = 12,589)

Age, mean (SD)

67.5 (9.6)

Gender, male, n (%)

6131 (48.7)

Marital status, Married, n (%)

44 (2.6)

Education level, n (%)

 Illiterate

2832 (22.5)

 Primary

5017 (39.9)

 Junior

2870 (22.8)

 Senior or above

1870 (14.9)

Residency, rural, n (%)

9307 (73.1)

Smoking, n (%)

4969 (39.5)

Drinking, n (%)

4171 (33.1)

BMI, mean (SD)

23.7 (4.0)

Hypertension

3099 (24.6)

dyslipidemia

1233 (9.8)

Diabetes or high blood sugar

731 (5.8)

Sleep duration

6.4 (1.8)

CES-D

9.8 (4.7)

Depressive symptoms, n (%)

2077 (16.5)

Cognitive function

8.1 (2.8)

  1. BMI body mass index, SD standard deviation.
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