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. 2006 Sep 1;44(1):24–30. doi: 10.1136/jmg.2006.043521

Table 4 Pearson's correlations between the different red cell indices at 12, 14 and 16 years of age.

		Females
		Hb₁₂	RBC₁₂	HCT₁₂	MCV₁₂	Hb₁₄	RBC₁₄	HCT₁₄	MCV₁₄	Hb₁₆	RBC₁₆	HCT₁₆	MCV₁₆
MalesHb₁₂	Males		0.82	0.95	0.07	0.57	0.39	0.50	0.15	0.48	0.37	0.46	0.13
RBC₁₂		0.80		0.83	–0.44	0.48	0.56	0.43	–0.25	0.34	0.49	0.29	–.30
HCT₁₂		0.92	0.82		0.13	0.54	0.39	0.51	0.16	0.46	0.38	0.44	0.10
MCV₁₂		–0.04	–0.52	0.04		0.04	–0.34	0.07	0.69	0.11	–0.25	0.16	0.63
Hb₁₄		0.56	0.41	0.51	0.04		0.78	0.91	0.10	0.61	0.35	0.52	0.27
RBC₁₄		0.44	0.63	0.44	–0.44	0.77		0.79	–0.43	0.51	0.56	0.44	–0.19
HCT₁₄		0.52	0.42	0.52	0.03	0.91	0.81		0.20	0.58	0.34	0.53	0.29
MCV₁₄		0.15	–0.31	0.14	0.75	0.22	–0.32	0.30		0.03	–0.35	0.07	0.66
Hb₁₆		0.41	0.21	0.28	0.04	0.68	0.52	0.64	0.13		0.75	0.92	0.29
RBC₁₆		0.38	0.48	0.32	–0.32	0.44	0.62	0.45	–0.30	0.74		0.79	–0.31
HCT₁₆		0.44	0.25	0.36	0.10	0.62	0.51	0.65	0.17	0.93	0.80		0.33
MCV₁₆		0.08	–0.37	0.08	0.66	0.30	–0.17	0.31	0.73	0.31	–0.29	0.34

Hb, haemoglobin; HCT, haematocrit; MCV, mean corpuscular volume; RBC, red blood cell.