Table 5.

The probability of death within 90 days after endobiliary stent placement in the derivation and validation cohorts.

	Derivation cohort			Validation cohort
Score interval	HR (95% CI)	P value	Probability of death	HR (95% CI)	P value	Probability of death
< -0.83		<0.001†	14.6%		<0.001†	12.0%
-0.83 to <0.07	3.49 (1.81–6.70)	<0.001‡	41.9%	3.25 (0.92–11.52)	0.068‡	34.3%
0.07 to <0.58	5.09 (2.69-9.63)	<0.001‡	54.9%	6.12 (1.77-21.19)	0.004‡	55.6%
≥ 0.58	8.26 (4.46–15.31)	<0.001‡	75.2%	12.10(3.57–41.08)	<0.001‡	76.0%

95% CI, 95% confidence interval; HR, hazard ratio.

^†P value of total score (reference); ^‡P value of each interval score compared with the reference.