Table 4 Univariate analysis with positive conversion of HER2 in recurrence for smoking
From: The effect of smoking on biological change of recurrent breast cancer
Smoking | Change of HER2 in recurrence | Odd ratio | 95% CI | p value |
|---|---|---|---|---|
No change/positive conversion | ||||
No-smoker | 34 (94.4%)/2 (5.6%) | Reference | Reference | Â |
Pack-years of smoker | ||||
 ≤ 25 | 3 (75.0%)/1 (25.0%) | 5.667 | 0.390–82.237 | 0.243 |
 25–50 | 6 (75.0%)/2 (25.0%) | 5.667 | 0.664–48.333 | 0.124 |
 > 50 | 1 (50.0%)/1 (50.0%) | 17.000 | 0.753–383.892 | 0.096 |
 Smoker | 10 (71.4%)/4 (28.6%) | 6.800 | 1.082–42.731 | 0.024 |