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Table 2 Maternal FA composition (% of total FA) and FA category defined by the reference values (RV)

From: Low omega-3 index values and monounsaturated fatty acid levels in early pregnancy: an analysis of maternal erythrocytes fatty acids

Fatty acids (%)   Mean ± SD Below RV Within RV Above RV
SFA
 Myristic acid C14:0 0.29 ± 0.08 1 (0.8) 110 (90.2) 11 (9.0)
 Palmitic acid C16:0 21.8 ± 1.02 27 (22.1) 89 (73.0) 6 (4.9)
 Stearic acid C18:0 16.1 ± 0.76 0 (0.0) 114 (93.4) 8 (6.6)
MUFA
 Palmitoleic acid C16:1n-7 0.15 ± 0.06 92 (75.4) 30 (24.6) 0 (0.0)
cis vaccenic acid C18:1n-7 0.85 ± 0.11 1 (0.8) 107 (87.7) 14 (11.5)
 Oleic acid C18:1n-9 11.0 ± 0.94 109 (89.3) 13 (10.7) 0 (0.0)
n-6 PUFA
 Linoleic acid C18:2n-6 8.43 ± 1.13 63 (51.6) 56 (45.9) 3 (2.5)
 Gamma-linolenic acid C18:3n-6 0.05 ± 0.01 16 (13.1) 106 (86.9) 0 (0.0)
 Dihomo-gamma-linolenic acid C20:3n-6 1.52 ± 0.35 30 (24.6) 85 (69.7) 7 (5.7)
 Arachidonic acid C20:4n-6 14.3 ± 1.26 1 (0.8) 26 (21.3) 95 (77.9)
 Total n-6 PUFA   24.3 ± 1.51 8 (6.6) 89 (73.0) 25 (20.5)
n-3 PUFA
 Alpha-linolenic acid C18:3n-3 0.13 ± 0.05 10 (8.2) 90 (73.8) 22 (18.0)
 Eicosapentaenoic acid C20:5n-3 0.51 ± 0.25 106 (86.9) 16 (13.1) 0 (0.0)
 Docosahexaenoic acid C22:6n-3 5.27 ± 1.42 67 (54.9) 53 (43.4) 2 (1.6)
 Total n-3 PUFA   5.92 ± 1.59 87 (71.3) 35 (28.7) 0 (0.0)
tFA
trans vaccenic acid C18:1n-7 t 0.13 ± 0.03 NA 115 (94.3) 7 (5.7)
 Elaidic acid C18:1n-9 t 0.04 ± 0.01 NA 119 (97.5) 3 (2.5)
Omega-3 index   5.79 ± 1.60 108 (88.5) 12 (9.8) 2 (1.6)
n-6/n-3 ratioa   4.44 ± 1.36 0 (0.0) 53 (43.4) 69 (56.6)
AA/EPA ratio   34.5 ± 16.8 0 (0.0) 3 (2.5) 119 (97.5)
LA/DGLA ratio   5.82 ± 1.47 NA 17 (13.9) 105 (86.1)
  1. Fatty acid composition of maternal erythrocyte phospholipids is presented as mean ± SD and maternal erythrocyte fatty acid category as number (%)
  2. SFA saturated fatty acids, MUFA monounsaturated fatty acids, n-6 PUFA omega-6 polyunsaturated fatty acids, n-3 PUFA omega-3 polyunsaturated fatty acids, tFA trans fatty acids
  3. an-6/n-3 ratio = total n-6 PUFA/total n-3 PUFA