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1-OHP levels by smoking use status in control and exposed group.
| Control group | Exposed group | |||
|---|---|---|---|---|
| Smoking (No) | Smoking (yes) | Smoking (No) | Smoking (yes) | |
| n | 37 | 41 | 47 | 79 |
| 1-OHP level | 0.48 ± 0.21 | 0.57 ± 0.31 | 8.62 ± 2.12 | 9.58 ± 3.65 |
| P valuea | 0.142 | 0.096 | ||
awhen compared between nonsmoking and smoking users control and exposed group by chi-square test.
