Table 2 Minimum and maximum values, means and standard deviations (SD) in the red cell indices for males and females at 12 years, 14 years and 16 years of age.

	Units	Age	Females						Males
			Min	Max	Mean	SD	Skew	Kurt	Min	Max	Mean	SD	Skew	Kurt
Hb	g/l	12	107	164	132.53	8.79	0.172	0.205	105	158	133.19	8.11	0.086	0.338
		14	107	156	131.67	8.43	0.004	–0.146	115	166	139.07	8.88	–0.048	–0.156
		16	110	156	132.57	8.37	0.046	–0.280	124	172	148.55	8.78	0.037	–0.178
HCT	l/l	12	0.318	0.481	0.396	0.025	0.144	0.274	0.329	0.462	0.396	0.023	0.003	0.116
		14	0.330	0.457	0.395	0.023	0.069	–0.316	0.330	0.487	0.415	0.026	–0.122	–0.130
		16	0.340	0.480	0.399	0.024	0.256	–0.083	0.370	0.514	0.444	0.026	–0.102	–0.189
RBC	Cells/pl	12	3.56	5.70	4.63	0.325	–0.034	0.344	3.59	5.84	4.68	0.324	0.230	0.583
		14	3.73	5.45	4.52	0.296	0.318	0.084	3.99	5.72	4.83	0.313	0.114	–0.098
		16	3.78	5.39	4.49	0.283	0.116	0.054	3.99	5.84	5.02	0.301	–0.045	–0.185
MCV	fl	12	74	97	85.57	3.45	–0.009	0.456	75	96	84.67	3.34	0.130	0.074
		14	75	98	87.46	3.64	0.015	0.420	75	99	86.11	3.62	0.394	0.705
		16	77	100	88.92	3.67	0.057	0.330	77	101	88.55	3.47	0.284	0.819

Hb, haemoglobin; HCT, haematocrit; Kurt, kurtosis; Max, maximum; MCV, mean corpuscular volume; Min, minimum; RBC, red blood cell..