Table 1 Sample summary statistics
From: Evolving consumer trends for whey protein sports supplements: the Heckman ordered probit estimation
Variable | Percentage (%) |
|---|---|
Gender | |
Female | 45.71 |
Male | 54.29 |
Age | |
Age (≤ 25) | 52.94 |
Age (26–35) | 29.42 |
Age (> 36) | 17.64 |
Gross income | |
Income (< 30,000 euro) | 39.60 |
Income (30,000–50,000) | 44.56 |
Income (> 50,001–70,000) | 13.86 |
Income (> 70,001) | 6.93 |
Employment | |
Full-time employed | 43.27 |
Part-time employed | 14.42 |
Others (including full-time, third-level students) | 42.31 |
Exercise hours per week | |
Up to 3 h | 23.30 |
3 to 6 h | 38.83 |
More than 6 h | 37.87 |
Main type of exercise | |
Endurance | 61 |
Power and strength | 12 |
Flexibility | 27 |
When started using whey protein | |
Within the last year | 40 |
1–4 years ago | 45 |
> 5 years ago | 15 |