Table 4.

Rates of reported adverse events among pregnant women who commenced supplementation with assigned multivitamin

Adverse Events	35 mg iron group (n = 57*)	60 mg iron group (n = 47*)
No. subjects (%) who reported any adverse event(s)	27 (47%)	21 (45%)
Nausea and/or vomiting(NVP)	12 (21%)	9 (19%)
[Proportion who reported NVP before starting assigned multivitamin]	[11/12]	[9/9]
Constipation	13/57 (23%)	10/47 (21%)
[Proportion who reported constipation before starting assigned multivitamin]	[7/13]	[5/10]
Heartburn/Acid reflux	4/57 (7%)	1/47 (2%)
[Proportion who reported heartburn/reflux before starting assigned multivitamin]	[2/4]	[1/1]
Diarrhea	1/57 (2%)	3/47 (6%)
[Proportion who reported diarrhea before starting assigned multivitamin]	[1/1]	[1/3]
Abdominal pain/cramps	5/57 (9%)	5/47 (11%)
[Proportion who reported abdominal pain or cramps before starting assigned multivitamin]	[1/5]	[2/5]
Swallowing difficulties with tablet size	2/57 (4%)	None
[Proportion who reported swallowing difficulties before starting assigned multivitamin]	[0/2]

*Only subjects who completed the study, with no significant difference detected when partial data from subjects who did not complete the study were included.