Breastfeeding Duration: A Survival Analysis—Data from a Regional Immunization Survey

Table 1

Characteristics of the children and median duration of any and exclusive BF (in months) with 95% confidence interval (CI), 𝑃 values.

	% (𝑛)	Any breastfeeding			Exclusive breastfeeding
		Median duration	95% CI	𝑃 value	Median duration	95% CI	𝑃 value
BF at discharge maternity unit
Exclusive	87.0 (348)	4.5	4.0–5.0	<0.001
Partial	13.0 (52)	3.0	2.0–4.0
First-born infant
Yes	42.9 (225)	4.0	3.5–4.5	0.01	3.0	2.5–3.4	0.08
No	57.1 (299)	4.0	3.3–4.7		3.0	2.7–3.3
Full term
Yes	92.2 (484)	4.0	3.5–4.5	0.04	3.0	2.8–3.2	0.8
No	7.8 (41)	3.5	2.0–5.0		2.0	0.8–3.2
Delivery in BFHI
Yes	23.5 (118)	3.0	2.3–3.7	0.3	3.0	2.5–3.5	0.2
No	76.5 (385)	4.0	3.4–4.6		3.0	2.7–3.3
Mode of delivery
Vaginal	78.2 (410)	4.0	3.5–4.5	1.0	3.0	2.7–3.2	0.6
Cesarean section	21.8 (114)	4.5	3.6–5.4		3.0	2.0–4.0
Infant gender
Male	51.8 (271)	4.0	3.2–4.8	0.5	3.0	2.7–3.3	0.9
Female	48.2 (252)	4.0	3.3–4.6		3.0	2.5–3.5
Month of birth
May–September	66.3 (349)	4.5	4.0–5.0	0.03	3.0	2.7–3.3	0.01
October-November	33.7 (177)	3.0	2.3–3.7		2.0	1.5–2.5
MCH attendance
Yes	72.6 (382)	4.0	3.5–4.5	1.0	3.0	2.8–3.2	0.6
No	27.4 (144)	4.5	3.6–5.4		3.0	2.5–3.5