CanCOLD_At_risk_Quarterly_followup31
Networks
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Variables
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Population
CanCOLD - At risk
The population is composed of non-institutionalized adults, men and women, aged 40 and more, with a normal post bronchodilator spirometry, who are ever smokers.
Data Collection Event
CanCOLD - At risk - Quarterly follow-up 31
A 10 minute telephone questionnaire was administered to collect information on COPD exacerbation (i.e. symptom flare-ups).