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)
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)
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)
value*
—
0.86
0.001
0.41
*Using Post Hoc contrasts (repeated) to measure changes between intervals.