Table 6.

 Outcomes stratified by injection location. Values are numbers (percentages) unless stated otherwise

Outcome	Intra-bursal (all fluoroscopically guided injections plus blind injections into bursa)	Extra-bursal (blind injections not in bursa)	P value
Overall success:	(n=43)	(n=20)	0.72
None	18 (42)	6 (30)
At 1 month only	7 (16)	4 (20)
At 3 months	18 (42)	10 (50)
Mean (SD, range) pain intensity* at 1 month:	(n=43)	(n=20)
Rest	2.6 (2.4, 0-9)	2.2 (2.6, 0-10)	0.54
Activity	4.7 (2.9, 0-10)	4.3 (2.6, 0-10)	0.62
Mean (SD, range) pain intensity* at 3 months:	(n=24)	(n=14)
Rest	2.0 (1.8, 0-6)	2.8 (2.8, 0-7.5)	0.32
Activity	4.6 (2.8, 0-10)	4.9 (2.6, 1-10)	0.82
Mean (SD, range) Oswestry disability index at 1 month†	29.7 (17.4, 0-66, n=43)	37.8 (12.4, 18-60, n=20)	0.07
Mean (SD, range) Oswestry disability index at 3 months†	31.2 (13.0, 9-60, n=24)	34.8 (16.6, 6-64)	0.46
Positive global perceived effect at 3 months:‡	(n=43)	(n=20)	0.78
No	21 (49)	9 (45)
Yes	22 (51)	11 (55)
Drug reduction at 3 months:	(n=22)	(n=12)	0.14
No	16 (73)	5 (42)
Yes	6 (27)	7 (58)

*Numerical rating pain scale.

†Lower Oswestry disability index indicates better functioning.

‡Failed treatment at one month carried over as negative global perceived effect at three months.