Table 1.

Correlation of MK measures with platelet count and IPC, 5 days after ROM or placebo injection in adult and newborn mice.^*

MK measure	Tissue	Correlation with platelet count		Correlation with IPC
		r	p	r	p
Number†	BM	0.30	0.11	0.48	0.008
	Spleen	0.43	0.02	0.58	0.0007
	Liver	0.21	0.43	0.26	0.34
Diameter	BM	0.27	0.15	0.49	0.006
	Spleen	0.32	0.09	0.38	0.04
	Liver	–0.04	0.88	–0.04	0.89
MK mass‡	BM	0.30	0.11	0.53	0.003
	Spleen	0.46	0.01	0.68	<0.0001
	Liver	0.06	0.83	0.14	0.60

^*Spearman correlation coefficient; p tests for zero correlation. Values for marrow and spleen are partial correlations from a sample comprising 15 adult and 16 newborn mice, adjusted for age group to yield a tissue-specific within-age correlation. Values for liver are simple correlations from the sample of 16 newborn mice.

^†Per 250 × 250 μm field.

^‡Number × mean diameter³.