Table 2 Age-standardized prevalence (95% CI) of three types of obesity in Chinese adults, aged 18–65 years, by survey year and urban and rural areas in 1993–2011

15.8 (15.5–16.0)

18.0 (17.7–18.2)

21.8 (21.6–22.1)

23.7 (23.5–24.0)

25.0 (24.8–25.3)

27.9 (27.6–28.2)

30.3 (30.0–30.6)

<.0001

0.2 (0.2–0.3)

0.3 (0.2–0.3)

0.4 (0.4–0.4)

0.4 (0.4–0.5)

0.6 (0.5–0.6)

0.4 (0.4–0.5)

0.9 (0.9–1.0)

<.0001

2.9 (2.8–3.0)

4.4 (4.3–4.6)

5.6 (5.5–5.8)

6.4 (6.3–6.6)

6.4 (6.2–6.5)

8.1 (8.0–8.3)

10.3 (10.1–10.5)

<.0001

20.8 (20.6–21.1) ^**

21.3 (21.0–21.6) ^**

23.2 (23–23.5) ^**

24.9 (24.6–25.2) ^**

26.2 (25.9–26.4) ^**

27.5 (27.2–27.8) ^*

29.6 (29.3–29.9) ^**

<.0001

0.1 (0.1–0.2) ^**

0.4 (0.3–0.4) ^**

0.5 (0.5–0.6) ^**

0.3 (0.3–0.3) ^**

0.7 (0.6–0.7) ^**

0.9 (0.8–0.9) ^**

1.1 (1.1–1.2) ^**

<.0001

3.5 (3.4–3.6) ^**

6.1 (5.9–6.2) ^**

6.6 (6.4–6.7) ^**

7.5 (7.3–7.6) ^**

6.5 (6.4–6.7) ^*

8.7 (8.6–8.9) ^**

10.0 (9.8–10.2) ^**

<.0001

13.4 (13.2–13.6)

16.3 (16.0–16.5)

21.1 (20.8–21.3)

23.2 (22.9–23.4)

24.5 (24.2–24.7)

28.0 (27.7–28.3)

30.6 (30.3–30.9)

<.0001

0.3 (0.2–0.3)

0.2 (0.2–0.2)

0.3 (0.3–0.4)

0.5 (0.5–0.5)

0.5 (0.4–0.5)

0.2 (0.2–0.3)

0.8 (0.7–0.9)

<.0001

2.5 (2.4–2.6)

3.6 (3.5–3.7)

5.2 (5.0–5.3)

5.8 (5.7–6.0)

6.3 (6.1–6.4)

7.9 (7.7–8.0)

10.6 (10.4–10.8)

<.0001