ATS/ERS	American Thoracic Society/European Respiratory Society
AUC	area under the curve
CAPTURE	COPD Assessment in Primary Care to Identify Undiagnosed Respiratory Disease and Exacerbation Risk
CDQ	COPD Diagnostic Questionnaire
CI	confidence intervals
COPD	Chronic obstructive pulmonary disease
COPS-PS	COPD Population Screener Questionnaire
FEV1	Forced Expiratory Volume in 1 s
FEV1/FVC	ratio by dividing FEV1 by FV
FVC	Forced Vital Capacity
IQR	interquartile range
L-MICs	low- and middle-income countries
ORs	odds ratios
PC	primary care
PCP	primary care physicians
post-BD	post-bronchodilator
PSM	Propensity score matching
ROC	receiver operator characteristics