Table 3.

Cox regression for cessation of breastfeeding and introduction of complementary foods, Nairobi informal settlements, Kenya

Variable	Cessation of Breastfeeding				Initiation of Complementary Foods
	Univariate		Multivariate		Univariate		Multivariate
	HR1	95%CI	HR	95%CI	HR	95%CI	HR	95%CI
Sex
Girls	Ref		Ref		Ref		Ref
Boys	0.98	[0.80, 1.21]	0.88	[0.71, 1.10]	1.03	[0.99, 1.08]	1.05*	[1.00, 1.09]
Mother's age
< 25 years	Ref		Ref		Ref		Ref
25-34 years	1.18	[0.94, 1.48]	1.22	[0.92, 1.62]	0.99	[0.95, 1.04]	1.01	[0.95, 1.06]
35+ years	1.40#	[0.95, 2.05]	1.52#	[0.96, 2.40]	1.02	[0.94, 1.11]	1.01	[0.92, 1.12]
Mother's Marital Status
In union	Ref		Ref		Ref		Ref
Ever in union	2.52***	[1.87, 3.40]	2.76***	[1.97, 3.88]	1.10*	[1.02, 1.19]	1.07	[0.98, 1.16]
Never in union	1.31	[0.93, 1.84]	1.73**	[1.17, 2.55]	1.16***	[1.08, 1.24]	1.23***	[1.13, 1.34]
Mothers ethnicity
Kikuyu	Ref		Ref		Ref		Ref
Luhya	1.20	[0.86, 1.69]	1.54*	[1.06, 2.23]	1.21***	[1.13, 1.29]	1.19***	[1.12, 1.28]
Luo	1.28	[0.93, 1.77]	1.83***	[1.28, 2.62]	1.16***	[1.09, 1.23]	1.12**	[1.04, 1.19]
Kamba	0.91	[0.64, 1.28]	1.16	[0.79, 1.71]	0.98	[0.92, 1.04]	1.02	[0.95, 1.09]
Other	1.49*	[1.09, 2.03]	2.08***	[1.48, 2.92]	1.07*	[1.00, 1.14]	1.09*	[1.02, 1.17]
Mother's education level
< Secondary	Ref		Ref		Ref		Ref
Secondary+	0.61***	[0.45, 0.81]	0.58***	[0.43, 0.80]	0.88***	[0.84, 0.92]	0.92**	[0.87, 0.97]
Mother's Parity
One	Ref		Ref		Ref		Ref
Two	1.41*	[1.08, 1.83]	1.23	[0.91, 1.66]	1.04	[0.99, 1.10]	1.04	[0.98, 1.10]
Three+	1.20	[0.93, 1.55]	0.91	[0.64, 1.30]	1.03	[0.99, 1.08]	1.01	[0.94, 1.07]
Pregnancy desirability
Wanted at conception	Ref		Ref		Ref		Ref
Wanted later	0.95	[0.76, 1.20]	0.90	[0.69, 1.17]	1.01	[0.96, 1.05]	0.93**	[0.89, 0.98]
Never wanted	1.45*	[1.09, 1.94]	1.08	[0.76, 1.54]	1.15***	[1.08, 1.22]	1.05	[0.98, 1.13]
Delivery place
Health Facility	Ref		Ref		Ref		Ref
Home	0.93	[0.73, 1.17]	0.89	[0.69, 1.15]	1.19***	[1.14, 1.25]	1.19***	[1.14, 1.25]
Perceived size at birth
Normal	Ref		Ref		Ref		Ref
Smaller	1.20	[0.91, 1.59]	0.95	[0.70, 1.30]	1.03	[0.97, 1.09]	1.03	[0.97, 1.10]
Larger	0.61**	[0.43, 0.87]	0.55**	[0.38, 0.81]	0.96	[0.91, 1.01]	0.97	[0.92, 1.04]
SES Category
Poorest	Ref		Ref		Ref		Ref
Middle	0.89	[0.70, 1.13]	0.97	[0.75, 1.25]	0.95*	[0.91, 0.99]	1.01	[0.97, 1.06]
Least Poor	1.03	[0.69, 1.54]	1.10	[0.71, 1.68]	0.90*	[0.84, 0.98]	0.96	[0.89, 1.05]
Slum
Korogocho	Ref		Ref		Ref		Ref
Viwandani	0.86	[0.70, 1.06]	1.20	[0.92, 1.55]	0.85***	[0.82, 0.89]	0.89***	[0.85, 0.94]

¹HR = Hazard Ratio; # = p < 0.1; * p < 0.05; ** = p < 0.01; *** = p < 0.001