Table 3.

Main Categories and Prevalence of Maternally Reported Reasons for In-hospital Formula Supplementation^a

Main category	Prevalence (%) of main categoryb, c
	0–24 h	24–48 h	48–72 h	Overall 0–72 h
Low maternal supply	7.4	13.7	16.4	18.1
Signs of inadequate infant intake, e.g. excess weight loss, hypoglycemia	6.3	10.1	21.7	16.3
Poor infant breastfeeding behavior	6.6	8.8	14.6	13.7
Separation of dyad	6.6	2.3	4.0	9.4
Psychosocial reasons	2.8	3.6	3.5	5.3
Breastfeeding pain	0.5	3.1	4.4	4.1
Maternal incapacitation	2.8	1.0	1.3	3.6
Maternal medication	0.8	0.8	1.3	1.5

^aMothers (N=393) were asked at the Day 3 interview to provide reasons for formula supplementation (if any) for each 24-hour interval since birth. Reasons for formula supplementation were missing for 4 mothers whose babies received H-formula, resulting in N=389 mothers with complete H-formula reason data;

^bNumber of mothers reporting a reason under specified category at each time interval/number of mothers in the hospital at each time interval: N=112/393, 0–24 h; N=142/388, 24–48 h; N=117/226, 48–72 h; N=179/393, overall 0–72 h;

^cMothers could give multiple reasons in their open-ended response, and some reasons were coded under more than one main category.