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Table 3 Rates of adherence between 2 prenatal multivitamin groups, among subjects with nausea and vomiting of pregnancy (NVP) and study completionβ

From: Effect of iron content on the tolerability of prenatal multivitamins in pregnancy

Prenatal multivitamin groups, differing in iron content

 

35 mg iron group (n = 78)

60 mg iron group (n = 62)

p-value (chi-squared test)

No. of subjects with NVP (at time of enrolment)

67 (86%)

56 (90%)

0.59

Proportion who started taking assigned prenatal multivitamin

49/67 (73%)

44/56 (79%)

0.63

Proportion who were ≥ 80% adherent.ψ

17/49 (35%)

18/44 (41%)

0.69

  1. βNo significant difference was detected when partial data from subjects who did not complete the study were included.
  2. ψ Based on at least 80% pill intake