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. Author manuscript; available in PMC: 2014 May 5.
Published in final edited form as: Am J Obstet Gynecol. 2013 Apr;208(4):313.e1–313.e9. doi: 10.1016/j.ajog.2013.01.038

TABLE 3.

Measures of capsule compliance

Parameter EPA-rich fish oil (n = 39) DHA-rich fish oil (n = 38) Placebo (n = 41) Significance
Stopped before visit 2 (self-report) 3 0 3 .24a
Compliance between visits 1 and 2 (pill count), mean (SD) [number missing]c 0.67 (0.25) [3] 0.78 (0.20) [4] 0.68 (0.27) [1] .15b
Stopped before visit 3 (self-report) 4 2 4 .77a
Compliance between visits 2 and 3 (pill count), mean (SD) [number missing]c 0.58 (0.32) [5] 0.65 (0.27) [6] 0.63 (0.31) [2] .63b
Stopped before visit 5 (self-report) 5 4 7 .75a
Compliance between visits 3 and 5 (pill count), mean (SD) [number missing]c 0.67 (0.35) [4] 0.62 (0.30) [2] 0.64 (0.36) [3] .85b

Visit 1 was at enrollment at 12–20 weeks, visit 2 was at 26–28 weeks, visit 3 was at 34–36 weeks, and visit 5 was at 6–8 weeks’ postpartum. ANOVA, analysis of variance; DHA, docosahexaenoic acid; EPA, eicosapentaenoic acid; SD, standard deviation.

a

Fisher exact test;

b

One-way ANOVA;

c

Missing means that the subject did not return capsules to be counted at this time point.