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Baseline characteristics of the subjects of the study
| Control group | Probiotic group | p value | |
|---|---|---|---|
| Age (years ± SD) | 81.76 ± 7.2 | 83.79 ± 6.5 | 0.148 |
| Male/female (%) | 35.3/64.7 | 32/68 | 0.724 |
| BMI (Kg/m2, mean ± SD) | 26.3 ± 5.1 | 26.3 ± 3.5 | 0.974 |
| Current smoker (%) | 6.7 | 0 | 0.110 |
| Previous smoking habits (%) | 13.3 | 21.1 | 0.321 |
| Years as smokers (mean ± SD) | 38.1 ± 13.1 | 27.5 ± 11.7 | 0.142 |
