Table 5.
Prevalence rates of supplements consumption and heterogeneity statistics among Iranian athletic population according to age range, type of sport disciplines, professional level
| Subgroups | n | Prevalence (%) | 95% CI | Q | df (Q) | I2 |
|---|---|---|---|---|---|---|
| Age range | ||||||
| 20-24.9 years | 10 | 49.1 | 36.2-61.9 | 459.76 | 9 | 98.0% |
| 25-35 years | 8 | 68.7 | 52.2-85.3 | 648.75 | 7 | 98.9% |
| Not registered | 14 | 73.7 | 61.5-85.9 | 5180.33 | 13 | 99.7% |
| Type of sport discipline | ||||||
| Body-building | 18 | 71.8 | 63-80.6 | 1998.84 | 17 | 99.1% |
| All sports | 11 | 53.8 | 41.6-66.1 | 471.98 | 10 | 97.9% |
| Rowing | 1 | 61.9 | 50.1-73.7 | - | - | - |
| Wrestling | 1 | 25 | 20.9-29.1 | - | - | - |
| Soccer | 1 | 100 | 99.9-100.1 | - | - | - |
| Professional level | ||||||
| Recreational | 22 | 61.5 | 51.2-71.9 | 3705.86 | 21 | 99.4% |
| Elite | 8 | 73.9 | 57.4-90.5 | 893.37 | 7 | 99.2% |
| Both | 2 | 64.2 | 34.7-93.8 | 55.02 | 1 | 98.2% |
n=Number of studies; Q=Heterogeneity statistic; df (Q) = Q’s degrees of freedom; I2=Heterogeneity index