7. Available data for comparison 5 (Naproxen vs other NSAID).
| Trial | Groups | Pain on VAS | Withdrawals due to adverse events | BASDAI | Patient's global assessment of disease activity | Duration of morning stiffness | CRP | ASAS 20 | ASAS partial remission | BASFI | Chest expansion | Schober's test | Number of any adverse events | Number of serious adverse events | Adverse events per organ system |
| Barkhuizen 2006 | Naproxen 500 mg vs Celecoxib 400 mg | * | + | * | * | * | * | + | * | + | + | + | |||
| Myklebust 1986 | Naproxen 1000 mg vs Piroxicam 20 mg | + | * | * | * | ||||||||||
| Pasero 1994 | Naproxen 500 mg vs Aceclofenac 100 mg | * | + | * | + | + | + | ||||||||
| van der Heijde 2005 | Naproxen 1000 mg vs Etoricoxib 90 mg | + | + | + | + | + | + | + | + | + | + | + | + |
+ Available data that was used in the meta‐analysis. * Available data that could not be used in the meta‐analysis. Additional information on all included trials can be found in the Characteristics of included studies.