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Table 2 Age-specific prevalence of COPD in the general Anhui Chinese population

From: Prevalence and risk factors of chronic obstructive pulmonary disease in Anhui Province, China: a population-based survey

 

Overall

Men

Women

No. of Participants

95% CI

No. of Participants

95% CI

No. of Participants

95% CI

Overall (crude/GOLD)

2770

9.8 (8.8, 11.0)

1362

15.4 (13.6, 17.4)

1408

4.4 (3.4, 5.6)

Overall (weighted/GOLD)

2770

9.8 (8.2, 11.7)

1362

14.8 (12.6, 17.2)

1408

5.2 (3.1, 8.7)

Overall (weighted/LLN)a

2745

12.2 (8.4, 17.3)

1349

16.6 (12.2, 22.1)

1396

8.1 (4.2, 15.1)

Age group (crude/GOLD)

 40–49 years

1047

3.9 (2.9, 5.3)

480

5.2 (3.5, 7.6)

567

2.8 (1.7, 4.6)

 50–59 years

788

8.1 (6.4, 10.2)

335

11.9 (8.9, 15.9)

453

5.3 (3.6, 7.8)

 60–69 years

635

15.9 (13.3, 19.0)

365

24.4 (20.2, 29.1)

270

4.4 (2.5, 7.7)

 ≥70 years

300

22.0 (17.7, 27.1)

182

30.8 (24.5, 37.9)

118

8.5 (4.6, 15.1)

 P value for trend

 

< 0.001

 

< 0.001

 

0.012

Age group (weighted/GOLD)a

 40–49 years

1047

5.1 (3.2, 8.0)

480

5.9 (3.7, 9.5)

567

4.4 (1.6, 11.4)

 50–59 years

788

9.0 (4.9, 16.0)

335

12.3 (5.3, 25.8)

453

5.6 (3.7, 8.4)

 60–69 years

635

17.4 (10.5, 27.6)

365

30.1 (18.1, 45.7)

270

4.9 (1.8, 13.0)

 ≥70 years

300

19.9 (13.3, 28.6)

182

36.5 (18.5, 59.4)

118

8.3 (3.3, 19.6)

 P value for trend

 

0.006

 

0.011

 

0.328

Age group (weighted/LLN)a

 40–49 years

1047

10.9 (6.7, 17.4)

480

12.0 (7.5, 18.8)

567

9.9 (4.7, 19.7)

 50–59 years

788

11.0 (6.1, 19.2)

335

15.0 (6.6, 30.4)

453

7.0 (5.3, 9.3)

 60–69 years

635

14.6 (9.7, 21.5)

365

24.9 (18.0, 33.4)

270

4.5 (1.2, 15.9)

 ≥70 years

275

16.4 (10.1, 25.6)

169

28.0 (13.9, 48.2)

106

7.8 (3.6, 16.2)

 P value for trend

 

0.036

 

0.006

 

0.315

  1. aThe LLN defined COPD is only available for participants aged 40-81 years
  2. COPD, chronic obstructive pulmonary disease; GOLD, the Global Initiative for Chronic Obstructive Lung Disease; LLN, lower limits of normal