From: Single-dose oral naproxen for acute postoperative pain: a quantitative systematic review
 |  | Number of patients with at least 50% pain relief |  |  | |
---|---|---|---|---|---|
Active treatment and dose (mg) | Number of trials | Naproxen | Placebo | Relative benefit (95% CI) | NNT (95% CI) |
Naproxen sodium 550 | 6 | 127/252 | 30/248 | 4.2 (2.9 to 6.0) | 2.6 (2.2 to 3.2) |
Naproxen sodium/naproxen 440/400 | 3 | 103/210 | 14/124 | 4.8 (2.8 to 8.3) | 2.7 (2.2 to 3.5) |
Naproxen sodium/naproxen 220/200 | 2 | 54/120 | 13/82 | 2.9 (1.6 to 5.1) | 3.4 (2.4 to 5.8) |