Table 3.

Inclusion and exclusion criteria

Inclusion criteria	Exclusion criteria
Randomized control trials comparing surgical treatment (either open or arthroscopic) and conservative treatment or no treatment for SAIS	Randomized control trials comparing open and arthroscopic acromioplasty
Prospective studies analyzing outcome of ASD for the treatment of SAIS	Studies including patients with rotator cuff tears who underwent ASD only
Prospective studies analyzing outcome of conservative treatment (physical therapy) for the treatment of SAIS	Studies including patients with rotator cuff tears who underwent rotator cuff repair only
Adult patients (>18 years of age)	Studies including patients with rotator cuff tears who underwent rotator cuff repair and ASD
Conservative treatment for a minimum of 3–6 months before surgical intervention was considered	Studies including patients with adhesive capsulitis
Minimum follow-up of 6 months	Studies including patients with instability
Studies comparing ASD and bursectomy alone	Studies including children (<18 years of age)
	Studies with minimum follow-up less than 6 months
	Young patients (<18 years of age)

Abbreviations: SAIS, Subacromial Impingement Syndrome; ASD, arthroscopic subacromial decompression.