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Table 2 Age-standardized prevalence of central obesity * among Chinese adults with BMI < 25 kg/m 2

From: Increasing trends in central obesity among Chinese adults with normal body mass index, 1993–2009

 

1993

1997

2000

2004

2006

2009

P for trend

P

 

n

% (SE)

n

% (SE)

n

% (SE)

n

% (SE)

n

% (SE)

n

% (SE)

Total

5060

11.9 (0.4)

5346

12.2 (0.4)

5281

15.8 (0.4)

4722

18.2 (0.5)

4485

18.6 (0.5)

4597

21.1 (0.5)

< 0.001

 

Men

2538

4.4 (0.4)

2695

4.6 (0.4)

2652

7.7 (0.4)

2274

10.1 (0.5)

2119

8.9 (0.5)

2160

10.4 (0.5)

< 0.001

0.042

Women

2522

19.3 (0.7)

2651

19.8 (0.7)

2629

23.8 (0.7)

2448

26.0 (0.8)

2366

27.4 (0.8)

2437

30.9 (0.8)

< 0.001

Age (years)

              

  18-44

3228

7.7 (0.4)

3202

8.4 (0.4)

2941

11.0 (0.5)

2229

13.5 (0.6)

2054

13.6 (0.7)

1948

15.1 (0.7)

< 0.001

0.003

  45-64

1351

17.7 (0.9)

1515

17.7 (0.8)

1665

22.3 (0.8)

1727

24.9 (0.9)

1629

25.5 (0.9)

1770

34.9 (0.9)

< 0.001

 

  65-118

481

23.1 (1.7)

629

22.2 (1.5)

675

29.8 (1.5)

766

30.2 (1.4)

802

32.0 (1.4)

879

35.3 (1.4)

< 0.001

Region

              

  Urban

1407

15.7 (0.9)

1694

12.7 (0.7)

1640

16.3 (0.8)

1497

18.4 (0.8)

1432

19.8 (0.9)

1461

20.8 (0.9)

< 0.001

< 0.001

  Rural

3653

9.6 (0.4)

3652

11.3 (0.5)

3641

14.7 (0.5)

3225

17.2 (0.6)

3053

17.1 (0.6)

3136

20.1 (0.6)

< 0.001

Education

              

  Less than high school

4226

12.8 (0.5)

4347

13.0 (0.5)

4162

16.5 (0.5)

3690

19.0 (0.6)

3411

18.9 (0.6)

3441

22.4 (0.6)

< 0.001

0.67

  High school

706

9.3 (1.0)

827

10.0 (0.9)

895

14.8 (1.0)

595

17.3 (1.3)

588

17.5 (1.3)

582

19.6 (1.4)

< 0.001

  University

128

10.5 (2.3)

172

11.1 (2.1)

224

12.2 (1.9)

437

14.5 (1.4)

486

17.0 (1.4)

574

16.4 (1.3)

< 0.001

  1. SE, standard error.
  2. * Central obesity is defined as waist circumference ≥ 90 cm for men and ≥ 80 cm for women.
  3. Trends in the prevalence of central obesity from 1993 to 2009 were assessed by Cochran-Armitage trend testing.
  4. P for interaction terms (survey × sex, survey × age, survey × rural/urban settings, and survey × education group) were assessed by logistic regression analysis.