An Evaluation of the Responsiveness and Discriminant Validity of Shoulder Questionnaires among Patients Receiving Surgical Correction of Shoulder Instability

Table 2

Responsiveness (change over time) of three common shoulder questionnaires.

WOSI	Preoperative	6-month postoperative	12-month postoperative	24-month postoperative
Score (mean (standard deviation))	48.1 (19.8)	78.1 (16.6)	84.1 (14.6)	85.1 (14.6)
𝑃 value*	—	<0.001	0.011	0.69
ASES	Preoperative	6-Month Postoperative	12-Month Postoperative	24-month postoperative
Score (mean (standard deviation))	84.7 (7.8)	91.5 (10.3)	94.4 (4.9)	94.2 (7.7)
𝑃 value*	—	0.003	0.10	0.88
Constant	Preoperative	6-Month Postoperative	12-Month Postoperative	24-month postoperative
Score 9(mean (standard deviation))	81.6 (15.9)	82.5 (14.2)	92.2 (7.7)	93.6 (6.6)
𝑃 value*	—	0.86	0.001	0.41

*Using Post Hoc contrasts (repeated) to measure changes between intervals.