. Author manuscript; available in PMC: 2018 Apr 15.

Published in final edited form as: Rehabil Psychol. 2017 Jan 2;62(1):36–44. doi: 10.1037/rep0000117

Table 2.

Univariate Mixed Linear Regression for the Factors Associated With CHART-T (n = 3,162)

	CHART-t
Variable	Coef.	95% CI
Age at injury	−1.27	[−1.47, −1.07]
Current age^b	−1.18	[−1.38, −.98]
Years since injury^b	2.36	[1.29, 3.33]
Sex, women, (vs. men)^a ^b	−.29	[−7.42, 6.85]
Current educational level^b
<high school^a
=high school	29.70	[21.13, 38.26]
>high school	63.98	[54.64, 73.32]
NMLI
High tetraplegic (C1-C4)^a
Low tetraplegic (C5-C8)	27.93	[19.53, 36.35]
Paraplegic	67.28	[51.07, 69.49]
AIS classification, C or D, (vs. A or B)^b	26.76	[20.65, 36.86]
Upper limbs’ sMMTs
<20^a
≥20 & <50	67.46	[59.84, 75.08]
=50	87.12	[79.69, 94.56]
Lower limbs’ sMMTs, ≥20 (vs. <20)	33.98	[27.46, 40.51]
Bladder management^b
No assistive devices^a
ICP w/o EUC or CI	−17.97	[−24.95, −11.00]
EUC w/o CI	−40.85	[−51.28, −30.42]
CI and others	−77.50	[−85.53, −69.46]
Pain level, ≥5 (vs. <5)^b	−20.99	[−27.12, −14.86]
Total FIM (n = 2,912)	2.04	[1.94, 2.14]
CHIEF-t score	−1.41	[−1.69, −1.14]

Note. All the results of the mixed linear model taking into consideration the correlated nature of the outcome variable within the same region were significantly different from the results of the regular linear model. CHIEF-t = CHIEF-SF total score without the contribution of work/school dimension; CHART-t = CHART-SF total score from dimensions of physical independence, mobility, occupation, and social integration. Employed: working in a competitive job; in training status: on-the-job training or student; unemployed: unemployed, homemaker, retired, or at a sheltered workshop. CHIEF = Craig Hospital Inventory of Environmental Factors—Short Form; CHART = Craig Handicap Assessment and Report Technique— Short Form; Coef. = regression coefficient; MNLI = motor neurological level of injury; AIS = American Spinal Cord Injury Association Impairment Scale; sMMTs = sum of manual muscle test score; ICP = intermittent catheterization program; EUC: external urine collector; CI: Catheter indwelling; w/o = without.

Reference group.

Covariates selected into multivariate analysis model. p > .05.