Canadian Respiratory Journal / 2016 / Article / Tab 3

Research Article

Office-Based Case Finding for Chronic Obstructive Pulmonary Disease in Older Adults in Primary Care

Table 3

Results of the Canadian Thoracic Society screen for COPD screen for patients with a 20-pack-year history of smoking ().

Screening resultsTotal

Previous diagnosis of COPD

No previous diagnosis of COPD


Negative CTS screen for COPD61 (58.1)13 (36.1)48 (69.6)0.001
Positive CTS screen for COPD44 (41.9)23 (63.9)21 (30.4)
CTS screening for COPD, positive screens for the following:
 Coughs regularly23 (21.9)13 (36.1)10 (14.5)0.011
 Coughs up phlegm regularly25 (23.8)10 (27.8)15 (21.7)0.490
 Being short of breath31 (29.5)20 (55.6)11 (15.9)0.001
 Wheezes12 (11.4)9 (25.0)3 (4.3)0.003
 Having frequent colds2 (1.9)1 (2.8)1 (1.4)0.636

COPD: chronic obstructive pulmonary disease; CTS: Canadian Thoracic Society screening questions [2].
Statistically significant () differences between those previously diagnosed with COPD and those not previously diagnosed with COPD.
Positive response on at least one of the five CTS screening questions.

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