Table 1.

Variance components analysis for human milk lipids. Z: Wald Z-test value p: p-value. (Significance set to 0.05), ICC: intra-class correlation coefficient, F: F-test value.

	Variance Analysis			Time of Day		Order of Sample
Lipid class	Z	p	ICC	F	p	F	p
GM3	1.43	0.076	0.35	5.21	0.035	1.90	0.19
Cer	2.27	0.012	0.61	1.66	0.214	1.46	0.24
Hex1Cer	2.45	0.007	0.68	3.85	0.065	0.78	0.39
Hex2Cer	1.83	0.034	0.46	3.78	0.068	0.00	0.99
LPC	2.49	0.006	0.70	1.17	0.293	0.33	0.57
LPE	2.54	0.006	0.72	3.26	0.088	0.66	0.43
PE	2.10	0.018	0.55	13.72	0.002	1.48	0.24
PI	2.13	0.017	0.56	5.81	0.027	1.25	0.28
PC	2.04	0.020	0.53	4.15	0.057	1.62	0.22
PS	1.92	0.027	0.49	3.84	0.066	0.85	0.37
SM	1.90	0.029	0.49	2.35	0.143	0.56	0.47
DAG	2.59	0.005	0.74	1.30	0.270	1.45	0.24
TAG	1.89	0.029	0.48	7.95	0.011	1.18	0.29