Table 5 PHQ-9 defined prevalence rates (%) (95%Confidence intervals) of major depressive episodes (MDE) and mean scores (95%confidence intervals) according to sex and age groups
| Males | 18–29 years (N = 36) | 30–39 years (N = 81) | 40–49 years (N = 167) | 50–59 years (N = 216) | 60–69 years (N = 256) | 70–79 years (N = 187) | Total (N = 943) |
| MDE cut-off ≥ 10* | 11.1 (3.8–25.9) | 7.4 (3.2–15.5) | 8.3 (5.0–13.7) | 6.0 (3.5–10.1) | 4.7 (2.6–8.1) | 3.7 (1.7–7.7) | 5.9 (4.6–7.6) |
| MDE algorithm* | 2.8 (0.0–15.4) | 3.7 (0.8–10.8) | 3.6 (1.5–7.8) | 2.8 (1.1–6.1) | 2.0 (0.7–4.6) | 1.6 (0.3–4.8) | 2.6 (1.7–3.8) |
| PHQ-9 mean score# | 3.8 (2.4–5.2) | 3.4 (2.4–4.0) | 3.2 (2.5–3.9) | 2.7 (2.2–3.2) | 2.5 (2.1–2.9) | 2.4 (1.9–2.7) | 2.7 (2.5–2.9) |
| Females | 18–29 years (N = 68) | 30–39 years (N = 120) | 40–49 years (N = 231) | 50–59 years (N = 259) | 60–69 years (N = 260) | 70–79 years (N = 205) | Total (N = 1143) |
| MDE cut-off ≥ 10* | 17.6 (10.2–28.5)* | 10.8 (6.3–17.8) | 13.4 (9.6–18.5) | 9.3 (6.3–13.5) | 7.7 (5.0–11.6) | 5.9 (3.3–10.1)* | 9.8 (8.2–11.7) |
| MDE algorithm* | 8.8 (3.8–18.3)* | 7.5 (3.8–13.8) | 4.3 (2.3–7.9) | 2.7 (1.2–5.6) | 3.4 (1.7–6.5) | 1.0 (0.0–3.7)* | 3.8 (2.8–5.0) |
| PHQ-9 mean score# | 5.2 (4.0–6.4)# | 4.1 (3.1–5.1) | 3.8 (3.2–4.4) | 3.4 (2.9–3.9)# | 3.0 (2.5–3.5)# | 2.9 (2.4–3.4)# | 3.5 (3.3–3.7)# |