Table 5.

A Multiple Linear Regression for Modeling Improvement in Bladder Score (n = 76)

Outcome: Improvement in bladder score between rehabilitation admission and discharge
Variable	Estimate	Standard error	95% confidence interval		p value
Intercept	–0.02	1.29	–2.60	2.56	0.9871
Age at injury	0.04	0.01	0.01	0.07	0.0077
Sex
Female	1.24	0.56	0.12	2.35	0.0303
Male	Baseline	—	—	—	—
Neurological injury severity at acute admission
AIS A/B	0.62	0.84	–1.05	2.30	0.4602
AIS C/D	Baseline	—	—	—	—
Neurological level of injury at acute admission
L1	–1.04	0.70	–2.45	0.36	0.1436
L2	–0.15	0.84	–1.84	1.53	0.8584
L3–S3	Baseline	—	—	—	—
Voluntary anal contraction at acute admission
Present	–0.31	0.89	–2.10	1.48	0.7286
Absent	Baseline	—	—	—	—
Time from injury to surgery	0.00	0.00	0.00	0.00	0.5922
Rehabilitation length of stay	0.02	0.01	0.01	0.04	0.0013

p value in bold indicates statistical significance.

AIS, American Spinal Injury Association Impairment Scale; L, lumbar; S, sacral.