Table 5. Concentration indices showing wealth-based inequality in the use of maternal health services in Sierra Leone, 2008, 2013 and 2019.

Health indicator	Survey year	Conc. Index (CI)	SE (CI)	95% CI
				Low	High
4+ ANC visits	2008	0.197*	0.023	0.152	0.243
	2013	0.052*	0.013	0.026	0.077
	2019	0.016	0.013	-0.010	0.042
Skilled ANC	2008	0.104*	0.017	0.070	0.138
	2013	0.022*	0.005	0.012	0.032
	2019	-0.007	0.007	-0.021	0.008
Facility births	2008	0.202*	0.024	0.155	0.249
	2013	0.196*	0.024	0.148	0.244
	2019	0.109*	0.019	0.072	0.147
SBA	2008	0.330*	0.026	0.279	0.382
	2013	0.250*	0.023	0.206	0.295
	2019	0.113*	0.016	0.081	0.145

Note: * = p<0.001

** = p<0.01; 4+ ANC visits = four or more antenatal care visits; skilled ANC = skilled antenatal care provider; facility births = births delivered in a facility; SBA = births assisted by a skilled birth attendant.