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Table 4 Age distribution of several common mental disorders

From: Prevalence of mental disorders among middle school students in Shaoxing, China

Age

12 years

13 years

14 years

15 years

16 years

17 years

18 years

Sum

Any disorders

8.7 (6.9–10.4)

10.9 (9.5–12.2)

12.1 (10.7–13.5)

12.8 (10.9–14.7)

15.5 (13.0–18.0)

21.9 (17.7–26.2)

21.8 (13.0–30.7)

12.4 (11.7–13.2)

MDD

7.3 (5.7–9.0)

7.9 (6.7–9.1)

8.2 (7.0–9.4)

8.3 (6.7–9.8)

11.6 (9.4–13.8)

16.7 (12.9–20.6)

18.4 (10.1–26.7)

8.9 (8.3–9.6)

AD

3.5 (2.3–4.6)

4.2 (3.3–5.1)

5.1 (4.2–6.0)

4.4 (3.2–5.5)

5.7 (4.1–7.3)

7.9 (5.2–10.7)

10.3 (3.8–16.9)

4.8 (4.3–5.3)

OCD

5.8 (4.3–7.3)

7.3 (6.1–8.5)

8.0 (6.9–9.2)

8.9 (7.3–10.5)

13.8 (11.5–16.2)

20.5 (16.4–24.7)

19.5 (11.0–28.0)

9.1 (8.4–9.7)

SD

1.1 (0.5–1.8)

1.5 (0.9–2.0)

2.3 (1.7–3.0)

1.6 (0.9–2.4)

2.3 (1.3–3.3)

3.0 (1.3–4.8)

2.3 (0.0–5.5)

1.9 (1.6–2.2)

ADHD

5.2 (3.8–6.6)

3.5 (2.7–4.3)

2.0 (1.4–2.6)

1.3 (0.7–2.0)

1.2 (0.5–2.0)

0.3 (-0.3–0.8)

 < 0.1

2.5 (2.1–2.8)

ODD

3.5 (2.3–4.6)

3.0 (2.2–3.7)

2.1 (1.5–2.7)

0.4 (0.1–0.8)

0.2 (-0.1–0.6)

 < 0.1

 < 0.1

1.9 (1.6–2.2)

TD

3.3 (2.1–4.4)

1.4 (0.9–1.9)

0.5 (0.2–0.8)

0.4 (0.1–0.8)

0.1 (-0.1–0.4)

0.3 (-0.3–0.8)

 < 0.1

0.9 (0.7–1.1)

SUD

0.3 (0.0–0.7)

0.4 (0.1–0.6)

0.5 (0.2–0.8)

1.1 (0.5–1.6)

1.7 (0.8–2.6)

3.0 (1.3–4.8)

2.3 (-0.9–5.5)

0.8 (0.6–1.0)