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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