TABLE IV.

Twelve-Month Adjusted Differences in Functional Outcomes (Trauma Center vs. Nontrauma Center)^*

	SF-36 Physical Component†	SF-36 Mental Component†	MFA‡
Unstratified sample	0.8 (−2.1 to 3.7)	1.3 (−1.4 to 4.1)	13.8 (−2.1 to 29.7)
Pelvic-only injury	2.3 (−0.8 to 5.3)	2.1 (−1.9 to 6.0)	7.9 (−11.3 to 27.2)
Acetabular-only injury	−2.8 (−9.7 to 4.0)	−0.5 (−7.5 to 6.5)	12.5 (−10.5 to 35.5)
Combined injury	1.7 (−3.2 to 6.6)	0.5 (−6.7 to 7.6)	14.7 (−10.2 to 39.6)
OTA subclassification
Pelvic A-Type§	1.5 (−1.8 to 4.7)	2.3 (−1.0 to 5.7)	10.4 (−6.6 to 27.3)
Pelvic B or C-Type#	2.9 (−7.1 to 12.9)	−0.7 (−8.5 to 7.1)	16.3 (−10.3 to 42.8)
Acetabular A-Type§	−2.8 (−10.5 to 4.8)	−4.1 (−11.2 to 3.1)	9.4 (−13.3 to 32.1)
Acetabular B or C-Type#	11.4 (5.3 to 17.4)	3.8 (−1.7 to 9.3)	−13.2 (−24.7 to −1.7)

^*Propensity score-based adjustment model including the following covariates: all demographic and injury characteristics listed in Table I as well as ED (emergency department) first shock, first ED assessment of pupils, midline shift, flail chest, open skull fracture, obesity, and paralysis along with relevant two-way interaction terms. Values are presented as the mean difference with the 95% confidence interval in parentheses.

^†A positive score implies improved quality of life.

^‡Standardized Musculoskeletal Functional Assessment mobility subscale. A negative score implies less functional impairment.

^§A-Type is stable with regard to pelvic ring disruption and involves a single column with regard to acetabular injury.

^#B-Type is partially unstable with regard to pelvic ring disruption and includes a transverse component with regard to acetabular injury. C-Type is unstable with regard to pelvic ring disruption (complete disruption of the posterior arch) and involves complete articular injury of both columns with regard to the acetabulum.