Table-IV.

Mean blood counts at presentation in PV, ET, and PMF based on age groups.

			PV	ET	PMF
Age Groups	1–15 Years	WBC	.	.	8.5
		Hb	.	.	9
		HCT	.	.	23
		Plts	.	.	797
	> 15–30 Years	WBC	7.2	8	7.2
		Hb	17.7	13.7	10.9
		HCT	55	40	29
		Plts	186	1008	748
	> 30–50 Years	WBC	14	10	8.5
		Hb	16.8	13.4	10.7
		HCT	52	41	33
		Plts	706	1051	611
	> 50 Years	WBC	16.2	8.9	23.3
		Hb	17.9	12.2	10.8
		HCT	56	37	34
		Plts	562	863	611

Note: WBC (10⁹/L), Hb (g/dL),HCT (%), Plts (billion cells/L).