Table 1.
Baseline characteristics of the subjects
| Parameters | Placebo (n = 49) | Whey protein (n = 50) | Corn peptides (n = 47) |
|---|---|---|---|
| Age (years) | |||
| Median | 47.0 (39.5 - 52.0) | 49.0 (43.8 - 52.0) | 45.0 (38.0 - 52.0) |
| Weight (kg) | 76.8 ± 0.7 | 77.2 ± 0.8 | 78.0 ± 0.9 |
| BMI (kg/m2) | 25.9 ± 0.2 | 26.2 ± 0.2 | 26.4 ± 0.3 |
| >high school diploma (%) | 21 (42.9) | 16 (32.0) | 18 (38.3) |
| >RMB 40,000 yearly income (%) | 19 (38.8) | 18 (36.0) | 23 (48.9) |
| Cigarette smoker (%) | 23 (46.9) | 30 (60.0) | 26 (55.3) |
| Alcohol consumption (g/day) | 44.3 (36.0-39.6) | 45.6 (36.0-60.0) | 46.9 (36.0-48.0) |
| Duration of consumption (%) | |||
| 5–10 years | 8 (16.3) | 9 (18.0) | 4 (8.5) |
| 10–20 years | 17 (34.7) | 16 (32.0) | 16 (34.0) |
| >20 years | 24 (49.0) | 25 (50.0) | 27 (57.5) |
BMI, body mass index.
Values are means ± SE (continuous variables, normal distribution), medians with interquartile ranges (continuous variables, skewed distribution) in parentheses or numbers with percentages in parentheses (categorical variables). Continuous variables were compared using one-way ANOVA or Kruskal-Wallis H test, and categorical variables were compared using chi-square test or Kruskal-Wallis H test. Characteristics did not differ between groups.