Table 2 –

Associations between thrombocytopenia and outcomes in anemic and non-anemic patients^*

		Effect of ITCP in non-anemic patients		Effect of TCP in anemic patients
	Interaction P	Estimate (95% CI)	P	Estimate (95% CI)	P
Hospital length of stay†	0.365	1.02 (0.96, 1.07)	0.559	1.05 (1.00, 1.09)	0.034
Perioperative transfusion‡	0.029	3.39 (2.79, 4.12)	<.001	2.60 (2.24, 3.01)	<.001
Re-operation within 72 hours‡	0.269	0.90 (0.52, 1.54)	0.698	1.27 (0.92, 1.75)	0.139
ICU admission within 24 hours‡	0.006	1.56 (1.18, 2.05)	0.002	0.93 (0.73, 1.19)	0.578

^*Results are from multivariable linear or logistic regression adjusting for age, sex, ASA physical status, procedure type, anesthesia type, history of cancer, lymphoma, leukemia, liver disease, renal disease, MI, CHF, stroke, pre-operative antiplatelet therapy, and pre-operative anticoagulant. The interaction p-value tests for equality in effect of TCP between anemic and non-anemic patients.

^†Hospital length of stay is modelled on the log scale and estimates are for the multiplicative increase of the geometric mean associated with TCP in the given patient population.

^‡Estimates are odds ratios and represent the increased risk of the given outcome associated with TCP in the given patient population.