TABLE 5.

Association of PRBCT with OS within the PS strata

Propensity Score Strata (Range; Sample Size*)	HR (95% CI)	P
Strata 1 (0.084–0.349; 45 and 21)	1.08 (0.43–2.71)	0.87
Strata 2 (0.350–0.552; 40 and 27)	1.27 (0.60–2.70)	0.54
Strata 3 (0.553–0.780; 25 and 41)	0.82 (0.40–1.66)	0.57
Strata 4 (0.781–0.903; 10 and 57)	0.95 (0.43–2.09)	0.91
Strata 5 (0.904–0.964; 4 and 63)	0.41 (0.14–1.18)	0.10
Combined	0.90 (0.62–1.30)†	0.58

^*Number of non-PRBCT and PRBCT patients, respectively.

^†The estimates were combined across the 5 strata using an inverse-variance weighted mean.