A questionnaire found disease-specific WORC index is not more responsive than SPADI and OSS in rotator cuff disease

Shoulder External Rotator Eccentric Training Versus General Shoulder Exercise for Subacromial Pain Syndrome: A Randomized Controlled Trial

“…The MCID for the WORC has been reported to be 13%. 45 These results identified a 26.09% improvement for the ETER group which exceeded MCID compared to the 11.75% change in the GE group which did not exceed established values for MCID. Prior investigations on shoulder eccentric training utilize a variety of patient report functional measures.…”

Assessing methods to specify the target difference for a randomised controlled trial: DELTA (Difference ELicitation in TriAls) review

“…Some studies reported the estimate found using both methods but did not analyse the values any further. 161,[372][373][374] Fewer studies used both methods to identify a point estimate of important change 172,367,375,376 and in at least one instance this was because there was agreement in the values found using both methods. 172,174 More often, rather than reporting point estimates, studies reported a range of values for important differences, based on all methods used.…”

Home exercises and supervised exercises are similarly effective for people with subacromial impingement: a randomised trial

“…27 This study was thus designed to detect a between-group difference of 20 points on the SPADI as statistically significant, with alpha of 0.05 and power of 0.80. The standard deviation was set to 20, according to a previous study.…”