. Author manuscript; available in PMC: 2018 Apr 1.

Published in final edited form as: J Hand Surg Am. 2017 Apr;42(4):227–235. doi: 10.1016/j.jhsa.2017.02.001

Table 4.

Third injection characteristics and bivariate contrasts between successes and failures.

Variables	Participants (N=62) Mean (SD)/N (%)	Success (N=24) Mean (SD)/N (%)	Failure (N=38) Mean (SD)/N (%)	P-value

Age in years at 1^st Injection	60 (10)	58 (9)	61 (10)	0.30

Sex, Female	37 (60%)	17 (71%)	20 (53%)	0.16

Affected Finger				0.53
Thumb	16 (26%)	8 (33%)	8 (21%)
Index	7 (11%)	3 (13%)	4 (11%)
Middle	18 (29%)	6 (25%)	12 (32%)
Ring	20 (32%)	6 (25%)	14 (37%)
Small	1 (2%)	1 (4%)	0 (0%)

Multiple Triggers	34 (55%)	13 (54%)	21 (55%)	0.93

Diabetes Status at 1^st				0.10
Injection
None	44 (71%)	14 (58%)	30 (79%)
NIDDM	12 (19%)	8 (33%)	4 (11%)
IDDM	6 (10%)	2 (8%)	4 (11%)

Comorbidities
Rheumatoid Arthritis	3 (5%)	1 (4%)	2 (5%)	1.00
Hypothyroidism	8 (13%)	2 (8%)	6 (16%)	0.47
Carpal Tunnel Syndrome	26 (42%)	12 (50%)	14 (37%)	0.31
Upper Extremity Tendonitis	9 (15%)	3 (13%)	6 (16%)	1.00

Green Classification at 3^rd Injection (N=43)				0.89
Grade I	11 (26%)	5 (29%)	6 (23%)
Grade II	24 (56%)	10 (59%)	14 (54%)
Grade III	4 (9%)	1 (6%)	3 (12%)
Grade IV	4 (9%)	1 (6%)	3 (12%)