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Table 3 Age-standardized prevalence of central obesity * among Chinese adults with BMI < 23 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

7.6 (0.4)

5346

7.6 (0.4)

5281

10.2 (0.4)

4722

12.1 (0.5)

4485

11.5 (0.5)

4597

13.5 (0.6)

< 0.001

 

Men

2538

2.5 (0.3)

2695

2.2 (0.3)

2652

4.5 (0.4)

2274

5.8 (0.5)

2119

4.3 (0.5)

2160

4.9 (0.5)

< 0.001

0.49

Women

2522

13.0 (0.7)

2651

13.3 (0.7)

2629

16.1 (0.8)

2448

18.2 (0.9)

2366

18.1 (0.9)

2437

21.2 (0.9)

< 0.001

Age (years)

              

  18-44

3228

4.9 (0.4)

3202

5.4 (0.4)

2941

7.6 (0.5)

2229

9.3 (0.6)

2054

8.9 (0.7)

1948

9.6 (0.7)

< 0.001

0.18

  45-64

1351

11.1 (0.9)

1515

10.4 (0.8)

1665

13.0 (0.9)

1727

15.6 (1.0)

1629

14.6 (1.0)

1770

18.3 (1.0)

< 0.001

  65-118

481

15.7 (1.8)

629

14.6 (1.5)

675

19.3 (1.7)

766

21.1 (1.7)

802

20.8 (1.6)

879

26.0 (1.7)

< 0.001

Region

              

  Urban

1407

10.5 (0.9)

1694

7.6 (0.7)

1640

10.8 (0.8)

1497

12.3 (0.9)

1432

12.3 (1.0)

1461

13.0 (1.0)

< 0.001

< 0.0001

  Rural

3653

6.2 (0.4)

3652

7.2 (0.4)

3641

9.4 (0.5)

3225

11.5 (0.6)

3053

10.6 (0.6)

3136

12.9 (0.7)

< 0.001

Education

              

  Less than high school

4226

8.3 (0.5)

4347

8.3 (0.4)

4162

10.4 (0.5)

3690

12.6 (0.6)

3411

11.7 (0.6)

3441

14.3 (0.7)

< 0.001

0.73

  High school

706

6.2 (1.2)

827

5.6 (0.9)

895

10.3 (1.1)

595

12.1 (1.6)

588

10.9 (1.5)

582

12.1 (1.8)

< 0.001

  University

128

8.0 (2.5)

172

6.8 (2.0)

224

8.8 (2.0)

437

9.7 (1.5)

486

11.5 (1.5)

574

11.6 (1.4)

< 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.