Botulinum toxin for chronic anal fissure after biliopancreatic diversion for morbid obesity

Table 5 Multivariate analysis of parameters registered 1 mo after treatment

Risk factor	P value	T ratio	95% CI
Age	0.8286	0.2183	-0.02207 to 0.01780
Sex	0.4231	0.8115	-0.2156 to 0.5011
MVAS 0	0.9669	0.04185	-0.01058 to 0.01102
Site of injection	0.7336	0.3433	-0.2783 to 0.3911
Maximal voluntary anal squeeze	0.3607	0.9273	-0.6433 to 0.2409
Enemas/suppositories use	0.5132	0.6612	-0.5860 to 1.149
Sensation of incomplete evacuations	0.7892	0.2696	-0.8144 to 1.063
Straining	0.8183	0.2317	-0.9509 to 1.195
Number of evacuations/wk	0.4590	0.7496	-0.03187 to 0.01473
Anal pain unrelated to evacuation	0.6136	0.5099	-1.341 to 0.8041
Nocturnal anal pain	0.5195	0.6513	-0.7694 to 1.492
Other anal pathologies	0.4454	0.7727	-0.3460 to 0.7686

MVAS 0: Maximal voluntary anal squeeze (pretreatment).