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| Outcome | Event rate Hyalgan | Event rate Adant | Relative risk 95%CI | Abs risk diff 95% CI | NNH (95% CI) | #/100 Adant with AE | #/100 Hyalgan withAE |
| Painful injection | 10.5% 2/19 | 20% 6/30 | 190% (43 to 846%) | 9% (‐10% to 29%) | 11 | 20 | 11 |
