Table 2
Prevalence of airflow obstruction compatible with chronic obstructive pulmonary disease,Note † by definition of airflow obstruction and selected characteristics, household population aged 35 to 79, Canada, 2007 to 2009

Table 2
Prevalence of airflow obstruction compatible with chronic obstructive pulmonary disease,† by definition of airflow obstruction and selected characteristics, household population aged 35 to 79, Canada, 2007 to 2009
Table summary
This table displays the results of Prevalence of airflow obstruction compatible with chronic obstructive pulmonary disease Definition of airflow obstruction, GOLD I or higher severity (FEV1 / FVC < 0.70), Non-GOLD staging criteria (FEV1 / FVC < LLN), GOLD II or higher severity (FEV1 / FVC < 0.70 + FEV1 < 80%), Non-GOLD staging criteria (FEV1/ FVC < LLN + FEV1 < LLN), % and 95% confidence interval (appearing as column headers).
  Definition of airflow obstruction
GOLD I or higher severity (FEV1 / FVC < 0.70) Non-GOLD staging criteria (FEV1 / FVC < LLN) GOLD II or higher severity (FEV1 / FVC < 0.70 + FEV1 < 80%) Non-GOLD staging criteria (FEV1/ FVC < LLN + FEV1 < LLN)
% 95% confidence interval % 95% confidence interval % 95% confidence interval % 95% confidence interval
from to from to from to from to
Age group  
Total 35 to 79 16.6 14.3 18.9 11.9 9.9 13.9 8.1 6.0 10.2 5.7 4.1 7.2
35 to 49 10.0 6.4 13.5 10.6 7.1 14.1 4.8Note E: Use with caution 2.6 7.1 4.7Note E: Use with caution 2.5 6.9
50 to 59 17.6 13.5 21.6 13.2 9.7 16.7 8.5Note E: Use with caution 5.0 12.0 5.1 3.3 6.9
60 to 69 22.1 19.9 24.7 12.7 9.4 16.0 11.8Note E: Use with caution 7.4 16.2 7.3Note E: Use with caution 3.5 11.2
70 to 79 37.0 30.2 43.9 13.8 10.8 16.7 16.6 11.5 21.6 9.0Note E: Use with caution 5.7 12.4
Sex  
Men 18.4 14.5 22.7 11.9 8.1 15.8 9.0 6.1 11.9 6.6 4.1 9.2
Women 14.8 11.5 18.2 11.9 9.2 14.6 7.2 4.6 9.8 4.8 3.5 6.0
Body mass index (kg/m2)  
Normal (less than 25) 21.5 18.4 24.6 17.3 13.6 20.9 9.3 5.9 12.6 6.9Note E: Use with caution 4.3 9.6
Overweight (25 to less than 30) 14.9 11.1 18.7 8.9 6.1 11.8 7.3Note E: Use with caution 4.2 10.4 4.3Note E: Use with caution 2.3 6.4
Obese (30 or more) 11.9 9.1 14.7 8.6Note E: Use with caution 4.9 12.3 7.8Note E: Use with caution 4.4 11.1 6.0Note E: Use with caution 2.8 9.3
Smoking status  
Current smoker 33.5 25.0 41.9 29.7 22.1 37.2 20.0 12.9 27.0 14.1Note E: Use with caution 7.6 20.7
Former smoker 16.4 12.7 20.2 10.3 7.5 13.0 7.9Note E: Use with caution 4.9 11.0 5.4Note E: Use with caution 2.9 7.9
Never smoker 8.8 6.9 10.7 5.0 3.5 6.6 2.8 1.9 3.6 2.0Note E: Use with caution 1.1 2.9
10 to 19.9 pack-years 30.5 24.7 36.4 23.9 19.5 28.3 18.0 12.9 23.2 12.4 8.0 16.9
20 to 39.9 pack-years 39.1 32.2 45.9 30.9 26.6 35.3 23.9 18.2 29.7 16.4 11.5 21.2
40 or more pack-years 52.6 40.9 64.3 30.3 20.1 40.4 23.7 17.6 29.9 17.0 11.5 22.4
Self-reported symptoms and disease  
Symptoms of chronic bronchitis 39.1Note E: Use with caution 21.5 56.7 33.4Note E: Use with caution 16.3 50.6 25.8Note E: Use with caution 13.1 38.6 19.9Note E: Use with caution 9.8 30.1
Diagnosed chronic bronchitis 30.2Note E: Use with caution 15.1 45.3 24.1Note E: Use with caution 13.9 34.4 22.3Note E: Use with caution 10.8 33.9 17.8Note E: Use with caution 8.0 27.7
Diagnosed chronic obstructive pulmonary disease 39.6 29.3 49.9 35.7 27.0 44.3 31.7 24.0 39.4 22.6 15.5 29.7
Diagnosed asthma 40.5 31.1 49.9 33.4 25.6 41.2 28.4 19.3 37.4 24.2 15.2 33.2
Took medication for obstructive lung disease in past month  
Yes 41.1 31.9 50.3 36.1 27.6 44.6 33.9 24.1 43.7 29.2Note E: Use with caution 19.3 39.2
No 15.3 13.4 17.1 10.6 9.1 12.2 6.7 5.2 8.2 4.4 3.4 5.4
Sensitivity analysisNote ‡  
35 to 79 years 16.6 14.7 18.6 11.8 10.1 13.6 8.1 6.3 9.9 5.6 4.3 6.9
E use with caution
Note †

pre-bronchodilator values

Return to note † referrer

Note ‡

includes respondents with poor quality spirometry (one acceptable spirometry)

Return to note ‡ referrer

GOLD = Global Initiative for Chronic Obstructive Lung Disease
FEV1 = forced expiratory volume in one second
FVC = forced vital capacity
LLN = lower limit of normal
Source: 2007 to 2009 Canadian Health Measure Survey.
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