Research Article

A Single-Center, Randomized Double-Blind Placebo-Controlled Study Evaluating the Effects of Poly-Gamma-Glutamate on Human NK Cell Activity after an 8-Week Oral Administration in Healthy Volunteers

Table 1

Demographic characteristics of the study subjects.

CategoryLow dosageHigh dosagePlaceboTotal value

Sex
 Male5 (15.2%)4 (12.1%)6 (18.2%)15 (15.2%)
 Female28 (84.9%)29 (87.9%)27 (81.8%)84 (84.9%)0.7900
Age
 Mean ± SD
 Median51.053.0 54.0 53.0
 Min~max20.0~57.020.0~64.020.0~68.020.0~68.00.2281