Table 1.

Response of Hb to HU	Hb (gr/dL) at baseline	Average Hb change on HU (gr/dL)	HbF (%) at baseline	Average HbF change on HU (%)	MCV (fl)		MCH (pg)		MCHC (gr/dL)
					Baseline	HU	Baseline	HU	Baseline	HU
↑Hb >1gr/dL	5.70	2.7	50	1.4	61.8	76.3	20.5	24.3	34.6	33.4
	5.30	1	17	12.9	54.7	51	17	16.2	30	29.4
	6.50	1.4	37	−2	47.7	56.4	16.3	20	33.6	33.8
	6.80	1.7	53	1.0	77.9	73	23	23.6	31.6	33.9
	7.20	1.1	28	14.7	53.8	71	18.4	22	28.2	31
	8.90	1.0	20	25.8	61.4	81	21	24.5	31	30
	6.5	1.4	48	3	67.2	69.6	22.3	23.2	35	35
Mean±SD	6.7±1.2	1.5±0.6	36±15	8.1±10	60±10	68±10	20±2.6	22±3.0	32±2.5	32±2.2
↑Hb < 1gr/dL	7.10	0.5	31	10.6	51.1	57	19.5	17.5	39	31.6
	8.20	0	15	11.4	55.2	59.4	19.2	19	36	32.8
	8.10	0.4	14	3.2	59.9	49.8	20.5	16.7	35.7	33.3
	7.30	0.4	34	6.4	52	64	17	20.8	34.2	32.3
	8.00	−0.4	31	−2.6	67.4	67.9	20	20.7	31.8	31.4
	8.50	0.7	36	11.8	67	67.7	21	20.9	33	32.5
	8.30	0.4	29	−1.6	55.9	52.8	17.5	17.1	30	31.3
	7.60	0.9	30	7.4	55	65.2	17	20.5	32.6	32
Mean±SD	7.9±0.5	0.4±0.4	27.5±8	5.8±5.7	58±6	60.5±6.8	19±1.6	19.2±1.8	34±2.8	32±0.7