Table 5.

Factors associated with exclusive breastfeeding duration: results obtained by Kaplan Meier curve

Variable	The type of breastfeeding outcome			Median.	95%CI	Kaplan-Meier
	censoring	Breastfeeding(N)	N%.	(Month)		χ2	P
Planned pregnancy						7.264	0.026
Unprepared	13	59	81.944	3.6	2.98,4.22
Prepared	51	277	84.451	3.5	3.20,3.80
Fully prepared	26	74	74	4.2	3.45,4.95
Deliver milk to the infants in NICU						15.346	<0.001
Yes	62	199	76.245	4.3	4.06,4.54
No	28	211	88.285	3.5	3.27,3.73
Husband’s attitude towards breastfeeding.						16.649	0.005
5	2	5	71.429	4.3	2.25,6.35
6	1	10	90.909	2.0	0.00,4.05
7	0	1	100.000	0.8	–
8	9	45	83.333	3.5	2.87,4.13
9	4	27	87.097	3.8	3.18,4.42
10	74	322	81.313	3.6	3.33,3.87
Type of feeding in NICU						45.371	<0.001
Exclusive breastfeeding.	31	15	39.474	6	–
Mixed feeding.	23	189	89.231	3.5	3.25,3.75
Formula	36	206	82.772	3.7	3.29,3.92
Breastfeeding knowledge level (points)						82.015	<0.001
≥ 14	80	184	69.697	4.5	4.08,4.93
<14	10	226	95.763	2.8	2.47,3.13
Breastfeeding self-efficacy (points)						53.184	<0.001
≥ 44	66	135	67.164	4.4	3.94,4.86
<44	24	275	91.973	3.5	3.16,3.84
Postpartum depression (points)						53.221	<0.001
≥ 14	75	185	92.5	4.3	3.95,4.65
<14.	15	225	75	3.1	2.85,3.35
Family support (points)						86.196	<0.001
≥ 3.	83	175	67.829	4.4	3.954.85
<3 .	7	235	97.107	3.9	2.66,3.14

χ2:Chi-square test; P p-Value, CI Confidence Interval