Table 2.

Inequality indices of estimates of factors associated with polio immunisation coverage among two-year-olds in Sierra Leone, 2008–2019

	2008			2013			2019
Dimension	Est.	LB	UB	Est.	LB	UB	Est.	LB	UB
Age
D	3.8	-12.5	20.1	3.7	-4.4	12.0	7.9	-3.7	19.6
R	1.0	0.7	1.5	1.0	0.9	1.1	1.1	0.9	1.4
PAF	0.4	0.4	0.4	0.3	0.3	0.3	0.6	0.6	0.6
PAR	0.2	-0.5	1.0	0.2	-0.2	0.7	0.4	-0.1	0.9
Economic status
D	3.5	-8.9	15.9	2.8	-8.0	13.8	-12.8	-23.6	-2.0
R	1.0	0.8	1.4	1.0	0.9	1.1	0.7	0.6	0.9
PAF	0	-0.1	0.1	4.5	4.5	4.6	0	-0.0	0.0
PAR	0	-7.8	7.8	3.5	-0.8	7.9	0	-5.5	5.5
Education
D	0.4	-12.0	12.9	2.5	-3.9	8.9	-3.2	-9.7	3.1
R	1.0	0.7	1.3	1.0	0.9	1.1	0.9	0.8	1.0
PAF	0	-0.1	0.1	3.9	3.9	4.0	0	-0.0	0.0
PAR	0	-9.2	9.2	3.0	-1.1	7.2	0	-3.4	3.4
Residence
D	3.1	-4.7	11.0	0.8	-6.2	8.0	-9.0	-15.6	-2.5
R	1.0	0.9	1.24	1.0	0.9	1.1	0.8	0.7	0.9
PAF	4.7	4.6	4.8	0.8	0.8	0.9	0	-0.0	0.0
PAR	2.3	-2.9	7.6	0.6	-2.6	3.9	0	-3.2	3.2
Sex of child
D	-4.4	-12.3	3.4	-0.4	-5.2	4.4	-1.5	-7.1	4.1
R	0.9	0.7	1.0	0.9	0.9	1.0	0.9	0.8	1.0
PAF	0	-0.0	0.0	0	-0.0	0.0	0	-0.0	0.0
PAR	0	-3.1	3.1	0	-1.8	1.8	0	-2.3	2.3
Province
D	17.5	6.2	28.9	11.5	-1.1	24.1	17.7	6.9	28.5
R	1.4	1.1	1.8	1.1	0.9	1.3	1.3	1.1	1.6
PAF	20.5	20.4	20.6	6.0	6.0	6.1	15.1	15.0	15.2
PAR	10.0	3.8	16.2	4.6	1.8	7.5	9.2	4.9	13.6

Est: Estimate; LB: Lower Bound; UB: Upper Bound; D: Difference; PAF: Population Attributable Fraction; PAR: Population Attributable Risk; R: Ratio