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. Author manuscript; available in PMC: 2013 Mar 27.
Published in final edited form as: J Hum Lact. 2012 Jan 4;28(2):189–195. doi: 10.1177/0890334411424727

Table 3.

Percentage Change in Geometric Mean Breast Milk Fatty Acid Concentration for a 1-Point Increase in Center for Epidemiologic Studies Depression Scale Score

Fatty Acida Unadjusted Model (95% Confidence Interval)b Adjusted Model (95% Confidence Interval)c
< 20 wk, pregnancy
   Total ω-3 −0.67 (−1.27, −0.07) −0.55 (−1.21, 0.13)
   Total ω-6 −0.21 (−0.57, 0.16) −0.30 (−0.69 1.01)
   ω-6:ω-3 0.04 (−0.03, 0.10) 0.01 (−0.06. 0.9)
   Eicosapentaenoic acid −0.86 (−1.73, 0.04) −0.31 (−1.28, 0.67)
   Docosahexaenoic acid −1.32 (−2.19, −0.46) −1.15 (−2.12, −0.19)
24–29 wk, pregnancy
   Total ω-3 −0.32 (−0.90, 0.27) −0.14 (−0.76, 0.48)
   Total ω-6 −0.07 (−0.41, 0.26) −0.19 (−0.55, 0.16)
   ω-6:ω-3d 0.2 (−0.04, 0.08) −0.01 (−0.08, 0.05)
   Eicosapentaenoic acid −0.73 (−1.57, 0.12) −0.18 (−1.05, 0.70)
   Docosahexaenoic acid −0.69 (−1.54, 0.16) −0.27 (−1.16, 0.61)
a

Regression models included log-transformed fatty acid variables. The results presented were backtransformed.

b

Unadjusted models included a variable for the laboratory analyzed the sample.

c

Adjusted models included education, smoking, maternal age, parity, income, estimated daily dietary intake of ω-3 or ω-6 fatty acids (depending on the model), and laboratory.

d

The ω-6:ω-3 ratio was not log-transformed when included in regression models. Results can be interpreted as a 1-point increase in Center for Epidemiologic Studies Depression Scale score corresponding to a 1-unit increase in ω-6:ω-3.