Table III.

Pre- and post-operative outcome analysis by time to surgery (< 3 months (Group A) versus > 3 months (Group B))

Outcome*	Group A (< 3 months)	Group B (> 3 months)	p-value
Studies (n)	7	8
Mean (sd) MINORS score	11.4 (0.5)	10.5 (2.4)	0.328
Total patients (n)	209	162
Mean (sd) age (yrs)	56.0 (9.0)	56.0 (6.0)	1.00
Mean (sd) time to surgery (mths)	1.8 (1.3)	4.9 (3.1)
Mean (sd) follow-up (mths)	49.0 (20.3)	38.3 (15.3)	0.280
Mean (sd) Constant score
Pre-operative	39.5 (3.8) (one study)	53.5 (6.2)	< 0.001
Post-operative	73.0 (16.0)	81.0 (10.4)	< 0.001
Difference	33.5	27.5
p-value	< 0.001	< 0.001
Mean (sd) UCLA
Pre-operative	11.0 (1.7)	-
Post-operative	31.1 (3.3)	-
p-value	< 0.001	-
Mean (sd) external rotation (°)
Pre-operative	61.0 (8.2)	68.0 (19.0)	0.003
Post-operative	59.7 (6.3)	77.3 (14.3)	< 0.001
Difference	-1.3	9.3
p-value	0.253	< 0.001
Mean (sd) abduction (°)
Pre-operative	41.8 (5.8)	88.5 (61.0)	< 0.001
Post-operative	150.5 (15.6)	102.7 (54.7)	< 0.001
Difference	108.5	14.2
p-value	< 0.001	0.140
Mean (sd) elevation (°)
Pre-operative	76.0 (34.0)	115.8
Post-operative	134.6 (29.1)	125.7
Difference	58.6	10
p-value	< 0.001	-

* MINORS, Methodological Index for NOn-Randomized Studies; UCLA, University of California, Los Angeles shoulder score