Table 1.
Baseline subject characteristics of the whole population (N = 100), by product group
| Probiotic group | Placebo group | |||
|---|---|---|---|---|
| (N = 50) | (N = 50) | |||
| Mean | SD | Mean | SD | |
| Age (years) | 63.3 | 2.8 | 63.0 | 2.4 |
| Body weight (kg) | 60.5 | 22.5 | 57.4 | 21.2 |
| Body mass index (kg/m2) | 25.5 | 5.0 | 24.9 | 4.0 |
| Females | ||||
| n | 40 | 39 | ||
| % | 80.0 | 78.0 | ||
| CID during previous winter | 2.7 | 1.0 | 3.2 | 1.2 |
| Vaccination | ||||
| Seasonal influenza | ||||
| n | 8 | 7 | ||
| % | 16.0 | 14.0 | ||
| Influenza A | ||||
| n | 4 | 6 | ||
| % | 8.0 | 12.0 | ||
| Pneumococcus | ||||
| n | 0 | 0 | ||
| % | 0.0 | 0.0 | ||
Mean values and standard deviations; numbers and percentages