Table 3. Associations between survival... | American Society of Hematology

Table 3.

Associations between survival time and patient characteristics identified using backward selection procedure (Cox proportional hazards model*)

	χ²	P	Hazard ratio (95% CI)	Parameter	Score
Poor karyotype	62.8	< .0001	3.0 (2.3-3.9)	1.08	9†
B2M greater than 2 mg/L	24.0	< .0001	2.2 (1.6-2.9)	0.77	6‡
Platelet count less than 100 K/μL and hemoglobin level less than 10 g/dL	8.5	.0036	1.5 (1.1-2.9)	0.38	3§
5% or more BM blasts	3.4	.0652	1.3 (1.0-1.7)	0.27	2∥

	χ²	P	Hazard ratio (95% CI)	Parameter	Score
Poor karyotype	62.8	< .0001	3.0 (2.3-3.9)	1.08	9†
B2M greater than 2 mg/L	24.0	< .0001	2.2 (1.6-2.9)	0.77	6‡
Platelet count less than 100 K/μL and hemoglobin level less than 10 g/dL	8.5	.0036	1.5 (1.1-2.9)	0.38	3§
5% or more BM blasts	3.4	.0652	1.3 (1.0-1.7)	0.27	2∥

Likelihood ratio χ², 115.7; n = 529.

1.08 × 8 = 9.0.

0.77 × 8 = 6.0.

0.38 × 8 = 3.0.

0.27 × 8 = 2.0.