From: SF-6D utility scores of smokers and ex-smokers with or without respiratory symptoms attending primary care clinics
Mean ± SD
Observed range
Total BCSS score = 0 (no symptoms) to 12 (all severe symptoms)
0.947 ± 1.121
0–9
Breathlessness (0–4)
0.071 ± 0.297
0–2
Cough (0–4)
0.378 ± 0.571
0–3
Sputum (0–4)
0.498 ± 0.598
0–4