Effect of serum 25-OHD on time taken to recover from stress fractures
| 25-OHD status | n | Mean serum 25-OHD (nmol/L) | Mean recovery time (weeks) |
| Deficient (<25 nmol/L) | 5 | 18.8 (± 4.6) | 13.0 (± 1.6) |
| Insufficient (25–50 nmol/L) | 21 | 34.4 (± 8.4) | 11.9 (± 2.4) |
| Sufficient (>50 nmol/L) | 11 | 70.0 (± 20.6) | 10.1 (± 2.5) |