Statistical parameters of pharmacokinetic data for caffeine
| Parameter | Mean | sd | 95% confidence interval |
| Terminal half-life (hours) | 15.18 | ±2.66 | 13.40 to 16.97 |
| Volume of distribution (ml/kg) | 893.3 | Not calculated | 785.2 to 1016.2 |
| Clearance (ml/hours x kg) | 41.97 | ±12.94 | 33.74 to 50.19 |