Table 1. Estimated facility sample size at the study setting.

	Savelugu municipal hospital	Savelugu health centre	Pong-Tamale health centre	Moglaa health centre	Diare health centre	Savelugu municipality (total)
A: Total 2019 antenatal visits at the health facilities	3,025	1,098	847	336	2,321	7,627
B: Total facility coverage (%) [= (A)/7627]	39.7%	14.4%	11.1%	4.4%	30.4%	100%
C: Total sample size for each facility [= (B) x 422]	167	61	47	19	128	422