Research Article
Safety and Efficacy Profile of Echinacea purpurea to Prevent Common Cold Episodes: A Randomized, Double-Blind, Placebo-Controlled Trial
Table 1
Demographic and anamnestic data from participants in the safety collective at the inclusion visit.
| Variables | Echinaforceโโ ( = 355) means | Placeboโโ ( = 362) means | value |
| Age (years) (SD) | 23.6 (7.8) | 23.2 (7.2) | (n.s)* | Body weight (kg) (SD) | 67.7 (13.1) | 69.5 (13.1) | (n.s)* | Body height (cm) (SD) | 167.5 (9.0) | 168.1 (8.9) | (n.s)* | Body mass index (SD) | 24.1 (4.0) | 24.5 (3.9) | (n.s)* | Gender | โ | โ | โ | โFemale (%) | 244 (68.7) | 227 (62.7) | (n.s)** | โMale (%) | 111 (31.3) | 135 (37.3) | โ | Colds in the past; (SD) | 3.0 (1.18) | 2.8 (1.06) | P < 0.05
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