Table 4. Univariate and multivariate analyses of factors for GVHD-related mortality.

HR, hazard ratio; CI, confidence interval; PBSC, peripheral blood stem cells; BM, bone marrow; TBI, total body irradiation.

UnivariateMultivariate
HR
(95% CI)		P
value		HR
(95% CI)		P
value
Antibiotic treatment group
  Imipenem/piperacillin-
tazobactam		ReferenceReference
  Aztreonam/cefepime0.38
(0.15–0.94)		0.0370.4
(0.16–0.99)		0.048
Age >401.35
(0.69–2.64)		0.38
Race
  White/BlackReference
  Asian/Hispanic1.19
(0.56–2.53)		0.65
  Other1.89
(0.64–5.57)		0.25
Source
  PBSCReference
  BM1.27
(0.44–3.72)		0.66
  Cord1.21
(0.69–2.11)		0.51
Donor
  Sibling identicalReference
  Unrelated identical1.47
(0.64–3.35)		0.36
  Nonidentical2.08
(0.96–4.47)		0.062
Intensity
  AblativeReferenceReference
  Reduced1.03
(0.49–2.19)		0.931.04
(0.49–2.2)		0.920
  Nonablative2.37
(1.15–4.91)		0.0202.3
(1.11–4.76)		0.026
TBI (any)1.72
(0.92–3.22)		0.087