Table 3.

Summary of gestational age in weeks at initiation of first ANC visit by number of visits attended and proportion available for vaccination within a specific window during the first visit among pregnant women interviewed from Kilifi Health Demographic Surveillance System area, Coastal Kenya

Number of ANC Visits	Participants n (%)	Median Gest age (weeks) at First ANC visit	IQR Gest age (weeks) at first ANC visit	Proportion VAC-Window1 (28–32 weeks) at first ANC visit	Proportion VAC-Window2 (26–33 weeks) at first ANC visit	Proportion VAC-Window3 (24–36 weeks) at first ANC visit
1	77 (16.4)	30	26–34	6.0	7.5	12.8
2	107 (22.8)	28	26–31	13.6	17.2	21.5
3	124 (26.4)	24	22–28	6.6	10.2	18.1
4	116 (24.7)	23	20–26	3.2	6.8	11.7
5	46 (9.8)	18	12–20	0.2	0.2	0.6
Total	470 (100)			29.6	41.9	64.7