Table 5. Key themes and candidate content.

Theme	Candidate content
Exposure	Smoking (current, history) Second-hand smoke ‘Dirty’ air
Personal and family history	Family smoking history Relatives with COPD, lung cancer, asthma Personal history of recurrent chest infections/colds
Recent history	Environmental triggers affect breathing Colds, acute bronchitis Clinic visits for or with breathing-related problems Hospitalisations for or with breathing-related problems Missed school or work days owing to breathing-related problems
Symptoms	Respiratory: dyspnoea, cough, sputum, chest congestion, wheezy/noisy breathing, chest tightness, chest heavy Non-respiratory: fatigue, feeling tired, lack of energy, sleep difficulties, slowing down
Impact	Activity limitations—stairs, steps, walking quickly Frequent stopping, keeping up with others
Attribution	Symptom attribution to smoking, age, weight or other health conditions

Abbreviation: COPD, chronic obstructive pulmonary disease.