“…Confusion exists among the tools utilised. The recommended screening methods for COPD include the use of medical examinations with questionnaires (Estes et al, 2014;López Varela, 2016;Siu et al, 2016) to identify relevant risk factors, followed by diagnostic spirometry (Menezes et al, 2005;Levy et al, 2006;Buist et al, 2005;Weiss et al, 2014;Celli et al, 2015;Delgado et al, 2016;López Varela et al, 2016;Roberts et al, 2016;GOLD, 2017;Kotaki et al, 2017). Microspirometry with questionnaires may also be utilised as a precursor method for spirometry, as both are accessible in primary care settings, without the necessity for spirometers (Celli et al, 2015); and are affordable (Sichletidis et al, 2011;Dirven et al, 2013).…”