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Table 2 Prevalence of any type of insomnia symptoms by age and sex

From: Prevalence of insomnia symptoms and their associated factors in patients treated in outpatient clinics of four general hospitals in Guangzhou, China

Age (years)

(n = 628)

DIS (n = 628)

Age (years)

(n = 711)

DMS (n = 711)

Age (years)

(n = 544)

EMA (n = 544)

Age (years)

(n = 4399)

Any insomnia symptoms (n = 4399)

Female %

(95% CI)

Male %

(95% CI)

Total %

(95% CI)

Female %

(95% CI)

Male%

(95% CI)

Total %

(95% CI)

Female%

(95% CI)

Male%

(95% CI)

Total %

(95% CI)

Female%

(95% CI)

Male%

(95% CI)

Total %

(95% CI)

< 50 (n = 410)

13.4 (11.9–14.8)

12.6 (10.5–14.7)

13.1 (12.0–14.3)

< 50 (n = 458)

15.4 (13.9–16.9)

13.1 (11.0–15.3)

14.7 (13.4–15.9)

< 50 (n = 324)

10.7 (9.4–12.0)

9.6 (7.8–11.5)

10.4 (9.3–11.5)

< 50 (n = 324)

20.8 (19.1–22.5)

18.7 (16.3–21.2)

20.1 (18.7–21.5)

>/=50 (n = 218)

19.6 (16.8–22.5)

13.4 (10.5–16.3)

17.0 (15.0–19.1)

>/=50 (n = 253)

22.0 (19.1–25.0)

16.6 (13.4–19.8)

19.8 (17.6–22.0)

>/=50 (n = 220)

19.5 (16.6–22.3)

13.9 (11.0–16.9)

17.2 (15.1–19.3)

>/=50 (n = 220)

30.1 (26.8–33.4)

22.6 (19.0–26.1)

27.0 (24.5–29.4)

Total

14.9 (13.7–16.3)

12.9 (11.2–14.6)

14.3 (13.2–15.3)

Total

17.1 (15.7–18.5)

14.4 (12.6–16.1)

16.2 (15.1–17.3)

Total

12.9 (11.8–14.2)

11.2 (9.6–12.8)

12.4 (11.4–13.3)

Total

23.2 (21.6–24.7)

20.1 (18.1–22.1)

22.1 (20.9–23.3)

  1. CI = confidence interval; DIS = difficulty initiating sleep; DMS = difficulty maintaining sleep; EMA = early morning awakening