Table 3
Smoking and clinical stage: Stockholm workshop scale
Smoking
Stage 0–1 Minimal symptoms
Stage II Moderate symptoms
Stage III Severe symptoms
Non-smoker
86
85
113
284
Smoker
74
134
109
317
Total
160
219
222
601
Smokers (%)
46.3
61.2
49.1
52.8
p=0.007 by χ
2
teat.