Table 2. Association between vacA i1 intermediate region status and tobacco smoking.
| N vacA Region_i1neg | N vacA Region_i1 pos | OR | 95% | CI | ORadjusted a | 95% | CI | |
|---|---|---|---|---|---|---|---|---|
| Smoking status at endoscope | ||||||||
| Non active smokers | 21 | 26 | 1.00 | 1.00 | ||||
| Active smokers | 6 | 20 | 2.69 | 0.92 | 7.92 | 3.15 | 0.74 | 13.39 |
| Smoking status | ||||||||
| Never | 12 | 21 | 1.00 | 1.00 | ||||
| Former smoker | 9 | 5 | 0.32 | 0.09 | 1.17 | 0.38 | 0.07 | 2.13 |
| Current smoker | 6 | 20 | 1.91 | 0.60 | 6.05 | 2.20 | 0.46 | 10.58 |
| p-value for linear trend | 0.356 | 0.351 |
aAdjusted for sex, age (< = 50 years, >50 years), average of pure ethanol (g/day) (Never, moderate, high), consumption of proton pump inhibitors in the days prior to endoscopy (Yes/No), consumption of non-steroid anti-inflammatory drugs (Yes/No), and clinical presentation of upper digestive tract haemorrhage (Yes/No).