Table 3. Average concentrations (μM) of lipid^a species among in the women, in the pre-menopause and post-menopause.

São Luís, Maranhão, 2013.

Variables		Pre Menopause			Post Menopause
		Mean	SD	Variation	Mean	SD	Variation	T test
Phosphatidylcholines Phosphatidylethanolamines	PC.ae.C36:1	7.25	(2.65)	0.37–12.87	9.67	(4.24)	5.23–21.33	0.0374*
	PC.ae.C38:1	5.54	(1.75)	0.44–8.28	7.34	(3.14)	4.11–14.22	0.0311*
	PC.ae.C38:2	5.27	(1.58)	0.57–7.40	6.92	(2.59)	3.83–11.91	0.0206*
	LPE.a.C18:0	0.65	(0.21)	0.33–1.03	0.96	(0.59)	0.34–2.93	0.0337*
	PE.aa.C36:1	1.02	(0.48)	0.33–1.87	1.47	(0.83)	0.47–3.24	0.0423*
	PE.aa.C36:2	3.27	(1.65)	0.92–7.35	4.67	(2.58)	1.88–11.41	0.0498*
	PE.aa.C36:3	1.57	(0.66)	0.54–2.98	2.17	(1.06)	0.66–4.57	0.0380*
Ceramides	N.C10:0.Cer	0.12	(0.04)	0.05–0.22	0.21	(0.17)	0.07–0.85	0.0444*
	N.C22:0(OH).Cer	0.01	(0.01)	0.001–0.22	0.02	(0.01)	0.001–0.05	0.0461*
	N.C23:0.Cer	0.76	(0.31)	0.27–1.57	1.02	(0.43)	0.42–1.89	0.0364*
	N.C23:0(OH).Cer	0.02	(0.01)	0.01–0.04	0.03	(0.02)	0.01–0.08	0.0149*
	N.C24:0(OH).Cer	0.05	(0.04)	0.01–0.09	0.07	(0.04)	0.02–0.18	0.0207*
	N.C25:0.Cer	0.21	(0.08)	0.07–0.38	0.29	(0.13)	0.14–0.58	0.0417*
	N.C25:1.Cer	0.02	(0.01)	0.001–0.04	0.03	(0.02)	0.001–0.08	0.0400*

^aWith statistical difference between groups. T-test

*p<0.05; SD = standard deviation; Variation (min-max).