Table 5:

Multivariable comparisons reflecting the associations of SCI-QoL Independence with outcomes

		NBSS (N = 1358)		NBSS-satisfaction (N = 1358)		SCI QoL Bladder Management Difficulties (N = 1355)
		Coefficient (95% CI)	p-value+	Coefficients (95% CI)	p-value+	Coefficients (95% CI)	p-value+
Intercept		27.0 (24.5, 29.6)	<.001	2.6 (2.3, 2.9)	<.001	60.0 (58.1, 61.9)	<.001
SCI-QoL Independence	Middle tertile (46.3 – 55.7)	0.6 (−0.7, 1.9)	1.000	−0.1 (−0.3, 0.0)	1.000)	0.4 (−0.5, 1.4)	1.000
	Upper tertile (55.8 – 68.9)	−2.3 (−3.7, −0.8)	0.030	−0.4 (−0.6, −0.2)	<.001	−1.4 (−2.5, −0.3)	0.164
Primary bladder management	Chronic indwelling catheter	−7.3 (−8.8, −5.8)	<.001	−0.2 (−0.4, −0.0)	0.663	−2.8 (−3.9, −1.7)	<.001
	Surgery	−4.0 (−5.6, −2.3)	<.001	−0.7 (−0.9, −0.5)	<.001	−3.3 (−4.6, −2.1)	<.001
	Spontaneous voiding	4.5 (3.1, 5.9)	<.001	0.1 (−0.0, 0.3)	1.000	1.6 (0.6, 2.7)	0.043
Diagnosis	Paraplegia	3.2 (2.0, 4.3)	<.001	0.2 (0.1, 0.4)	0.009	2.4 (1.5, 3.2)	<.001
Age, 10 years*		−0.8 (−1.2, −0.4)	0.003	−0.06 (−0.11, −0.01)	0.389	−0.5 (−0.8, −0.2)	0.035
Gender	Male	−4.1 (−5.2, −3.0)	<.001	−0.2 (−0.3, −0.1)	0.021	−2.3 (−3.1, −1.5)	<.001
Years since SCI*		−0.3 (−0.8, 0.2)	1.000	−0.2 (−0.3, −0.1)	<.001	−0.5 (−0.8, −0.1)	0.264
BMI	≥30 kg/m2	1.7 (0.5, 2.9)	0.070	0.00 (−0.14, 0.14)	1.000	1.2 (0.3, 2.1)	0.158
Number of UTIs	1 – 3	2.7 (1.5, 4.0)	<.001	0.2 (0.0, 0.3)	0.284	1.1 (0.1, 2.0)	0.383
	4 or more	6.5 (5.1, 7.9)	<.001	0.6 (0.4, 0.7)	<.001	2.8 (1.7, 3.8)	<.001
Severe bowel dysfunction	NBS ≥14	1.1 (0.1, 2.2)	0.543	0.2 (0.0, 0.3)	0.096	1.1 (0.4, 1.9)	0.070
Education	Bachelor’s degree or higher	−1.1 (−2.2, −0.1)	0.480	0.09 (−0.04, 0.21)	1.000	−0.03 (−0.81, 0.76)	1.000

⁺p-values adjusted for multiple testing using the Bonferroni correction;

^*Age, years since injury were scaled by dividing by 10, thus 10 years becomes 1 year of change.

Abbreviation(s): SCI, spinal cord injury; BMI, body mass index; UTI, urinary tract infection