Table 1.

Baseline cohort characteristics for the longitudinal cohort

	Overall (N=2000) N (%) or median (IQR)	HEU (N=1000) n (%) or median (IQR)	HUU (N=1000) n (%) or median (IQR)
	n=2000	n=1000	n=1000
Region
Western Kenya	1230 (61.5%)	626 (62.6%)	604 (60.4%)
Nairobi	770 (38.5%)	374 (37.4%)	396 (39.6%)
Caregiver characteristics
Age in years	29 (24, 33)	31 (27, 35)	26 (23, 30)
Primary caregiver mother	1997 (99.9%)	1000 (100%)	997 (99.7%)
Education
None	16 (0.8%)	12 (1.2%)	4 (0.4%)
Primary	760 (38.0%)	495 (49.5%)	265 (26.5%)
Secondary	900 (45.0%)	383 (38.3%)	517 (51.8%)
College	284 (14.2%)	98 (9.8%)	186 (18.6%)
University	39 (2.0%)	12 (1.2%)	27 (2.7%)
Marital status
Married monogamous	1534 (76.7%)	720 (72.0%)	814 (81.5%)
Married polygamous	158 (7.9%)	114 (11.4%)	44 (4.4%)
Single, separated, widowed	216 (10.8%)	138 (13.8%)	78 (7.8%)
Steady partner	91 (4.6%)	28 (2.8%)	63 (6.3%)
Employment status
Professional	135 (6.8%)	56 (5.6%)	79 (7.9%)
Casual	237 (11.9%)	136 (13.6%)	101 (10.1%)
Unemployed	1421 (71.1%)	714 (71.4%)	707 (70.7%)
Other	207 (10.4%)	94 (9.4%)	113 (11.3%)
Food insecurity
Little to no hunger	1680 (84.0%)	770 (77.0%)	910 (91.0%)
Moderate hunger	309 (15.5%)	220 (22.0%)	89 (8.9%)
Severe hunger	11 (0.6%)	10 (1.0%)	1 .01%)
Infant characteristics
Sex, female	1011 (50.6%)	498 (49.8%)	513 (51.3%)
Age in days	44 (42, 48)	43 (42, 49)	44 (42, 47)
Breastfeeding at enrolment	1995 (99.8%)	995 (99.5%)	1000 (100%)

HEU, HIV-exposed uninfected; HUU, HIV-unexposed uninfected.