Table 2.

Rates of adherence between 2 prenatal multivitamin groups, based on subjects who completed the study^β

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. who started taking assigned prenatal multivitamin	57 (73%)	47 (76%)	0.86
Proportion who were ≥ 80% adherent†.	21/57 (37%)	18/47 (38%)	0.96
Proportion who were ≥ 50% adherent¶.	32/57 (56%)	28/47 (60%)	0.88

^β No significant difference was detected when partial data from subjects who did not complete the study were included.

^† Based on at least 80% pill intake.

^¶ Based on at least 50% pill intake