“…Cough, age, sex, dyspnoea, pack-years of smoking, wheezing (auscultated and reported), and consultation for wheezing or cough were associated with COPD in primary 6,12,15 and secondary care 13,17,27,28 studies, and diminished breath sounds in secondary care studies. 14,17,29 Some reported diagnostic items were not included in the present analysis, including forced expiratory time, 27,28,30 laryngeal height, 13 peak flow, 17,27 and subxyphoid apical impulse, 4 because they are not incorporated in standard physical examination. Moreover, some features of COPD were not assessed because they were considered unlikely in early COPD, such as barrel chest and accessory muscle use.…”