Fig. 2

Longitudinal changes in EDPS score in women with previous history of depression according to intervention group (Intention-to-treat analysis). Note: T1 = 22–24 gestational weeks (Randomized Clinical Trial baseline); T2 = 30–32 gestational weeks; T3 = 4–6 weeks’ postpartum. Data are presented as linear mixed effect coefficient (β) and 95% CI. P-value refers to the maximum likelihood estimator. T1 was the reference category. Fish oil supplement group: β_(T2) = −0.266; 95% CI = −2.428 to 1.896; P = 0.809. β_(T3) = −2.665; 95% CI = −4.774 to −0.556; P = 0.013. Control group: β_(T2) = 0.046; 95% CI = −2.118 to 2.210; P = 0.967. β_(T3) = 0.891; 95% CI = −1.364 to 3.146; P = 0.439