Urinary 5-aminosalicylic acid (5-ASA) and 5-N-acetylaminosalicylic acid (N-Ac-5-ASA) excretion and recovery of 5-ASA taken by mouth (% of the 5-ASA dose): database on 24 hour urine collection
| Balsalazide | Mesalazine | |||||
| Excretion (%) | 95% CI | Excretion (%) | 95% CI | p Value5-150 | ||
| 5-ASA | 0.89 | (0.50, 1.58) | 1.81 | (0.83, 3.92) | 0.147 | |
| N-Ac-5-ASA | 9.5 | (6.60, 13.70) | 14.9 | (9.10, 24.30) | 0.147 | |
| Recovery | 11.5 | (8.0, 16.70) | 18.7 | (11.40, 30.60) | 0.124 | |
↵5-150 χ2 test.
95% CI, 95% confidence interval.