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Table 1 Prevalence of suicidal ideation and depression using PHQ-9 in primary care and general population

From: The prevalence of suicidal ideation and depression among primary care patients and current management in South Korea

Survey

Survey for participating local clinics

(N = 1363)

2013–2014 Korean national health and examination survey (community people)

(N = 6037)

Tool

PHQ-9 Korean version

PHQ-9 Korean version

Classification

Suicide ideation

Depression

Suicide ideation

Depression

Male

Female

Total

Male

Female

Total (95% CI)

Male

Female

Total

Male

Female

Total (95% CI)

Severitya

 Severe

1.6

2.8

2.4 (1.5, 3.1)

1.0

2.2

1.8 (1.1, 2.5)

0.1

1.0

1.5 (1.2, 1.8)

0.6

2.3

0.7 (0.5, 0.9)

 Moderate severe

3.3

4.2

3.9 (2.9, 4.9)

1.6

3.3

2.7 (1.8, 3.5)

0.7

2.3

1.0 (0.7, 1.3)

0.4

1.5

1.6 (1.3, 2.1)

 Moderate

12.0

12.0

12.0 (10.3, 13.7)

4.7

8.4

7.0 (5.6, 8.3)

3.1

5.6

5.2 (4.6, 5.8)

4.3

6.2

4.5 (4.0, 5.2)

 Mild

   

23.5

26.0

25.1 (22.8, 27.4)

   

11.8

17.9

15.3 (14.3, 16.3)

 Cumulative sum

  

18.3 (16.2, 20.3)

  

36.6 (34.0, 39.2)

  

7.7 (6.9, 8.4)

  

22.1 (21.0, 23.2)

Age group

 18–29

15.0

15.1

15.1 (13.2, 17.0)

32.5

45.3

39.8 (37.2, 42.4)

7.3

7.8

7.6 (6.9, 8.3)

26.8

34.7

29.4 (28.1, 30.7)

 30–39

10.0

11.8

11.3 (9.6, 13.0)

35.0

33.3

33.8 (31.3, 36.3)

3.9

4.2

3.9 (3.4, 4.4)

21.5

27.6

23.9 (22.7, 25.1)

 40–49

21.4

10.7

14.3 (12.4, 16.2)

28.6

30.9

30.2 (27.7, 32.6)

3.2

5.1

4.3 (3.7, 4.9)

18.5

20.2

17.9 (16.8, 18.9)

 50–59

11.0

14.5

13.2 (11.4, 15.0)

21.0

32.0

27.9 (25.5, 30.3)

3.9

9.6

7.2 (6.5, 7.9)

14.6

24.0

19.2 (18.1, 20.3)

 60–69

6.8

16.3

13.1 (11.3, 14.9)

19.4

37.9

31.7 (29.2, 34.2)

5.6

12.8

9.3 (8.5, 10.1)

12.2

25.3

20.3 (19.2, 21.4)

 70+

25.9

27.4

26.9 (24.5, 29.2)

42.2

48.1

45.9 (43.2, 48.5)

8.3

20.2

14.6 (13.6, 15.6)

14.0

32.2

25.8 (24.6, 27.0)

 Total average

18.3

18.3

18.3 (16.2, 20.3)

42.2

36.6

36.6 (34.0, 39.2)

5.4

9.9

7.7 (6.9, 8.4)

17.0

22.3

22.1 (21.0, 23.2)

  1. aSuicide ideation assessed by question #9 of PHQ-9 and depression assessed by Total Scoring./Suicide ideation (Mild) several day (Moderate) More than half the days (Severe) Nearly every day/Depression (Mild) Total scoring 5–9 (Moderate) 10–14 (Moderate severe) 15–19 (Severe) 20–27