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

Table 3

Discriminant validity of three common shoulder questionnaires.

WOSI	Preoperative*	𝑃 value	6-month postoperative*	24-month postoperative*	Difference*	𝑃 value
Recurrence
Yes	47.3 (17.2)	0.96	71.4 (27.1)	50.8 (6.0)	−20.6 (21.0)	0.02
No	46.8 (17.2)		75.3 (17.7)	84.4 (17.0)	9.2 (16.6)
Single subluxation
Yes	79.8 (9.3)	0.73	76.3 (25.4)	65.7 (27.1)	−10.5 (9.1)	0.02
No	80.1 (13.6)		74.8 (16.8)	85.4 (15.2)	10.6 (17.4)
Any Reinjury
Yes	44.6 (20.8)	0.86	74.9 (23.6)	61.5 (23.4)	−13.4 (12.4)	< 0.001
No	45.9 (17.6)		75.1 (16.6)	88.0 (12.1)	13.0 (15.0)
ASES	Preoperative*	𝑃 value	6-month postoperative*	24-month postoperative*	Difference*	𝑃 value
Recurrence
Yes	84.5 (11.5)	0.75	88.0 (5.2)	88.2 (5.2)	0.2 (00)	0.63
No	82.7 (9.0)		88.2 (15.7)	92.5 (14.5)	4.3 (11.7)
Single subluxation
Yes	79.8 (9.3)	0.96	82.1 (30.7)	79.5 (32.0)	−2.6 (1.8)	0.17
No	80.1 (13.6)		89.2 (11.6)	94.4 (7.7)	5.2 (12.3)
Any reinjury
Yes	81.6 (9.6)	0.73	83.8 (25.3)	82.0 (25.6)	−1.8 (2.0)	0.14
No	79.8 (13.8)		89.2 (12.0)	94.8 (7.7)	5.6 (12.7)
Constant	Preoperative*	𝑃 value	6-month postoperative*	24-month postoperative*	Difference*	𝑃 value
Recurrence
Yes	80.1 (18.7)	0.98	91.2 (0.28)	83.8 (18.0)	−7.5 (17.7)	0.08
No	79.9 (12.8)		82.7 (17.2)	92.1 (13.4)	9.4 (12.4)
Single subluxation
Yes	71.9 (17.8)	0.41	74.8 (35.3)	75.7 (31.8)	1.9 (3.6)	0.31
No	78.3 (16.0)		84.8 (12.6)	94.0 (6.6)	9.2 (13.8)
Any reinjury
Yes	75.0 (17.3)	0.63	79.6 (28.8)	78.4 (26.3)	−1.2 (9.7)	0.05
No	78.1 (16.0)		84.2 (13.0)	94.8 (4.8)	10.6 (12.9)