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General Characteristics of the Groups Studied
| Exposed | Unexposed | |
|---|---|---|
| Number | 5 | 5 |
| Age (mean ± SD) | 57 ± 6.2 | 56.4 ±5.5 |
| Gender (n) | ||
| Male | 3 | 3 |
| Female | 2 | 2 |
| Exposure months (mean ± SD) | 154.8 ±152.2 | 0 |
| Smoking status (n) | ||
| Smokers | 1 | 1 |
| Non-smokers | 4 | 4 |
| Drinking status (n) | ||
| Drinkers | 3 | 4 |
| Non-drinkers | 2 | 1 |
Abbreviation: SD, Standard Deviation.
