Cost-effectiveness of facility-based, stand-alone and mobile-based voluntary counseling and testing for HIV in Addis Ababa, Ethiopia

Table 2 Input parameters of the cost-effectiveness model

Input parameters	Base value	Low value	High value	SD	Distribution	Data sources
Cost of positive for facility-based VCT	158.82	127.06	190.59	10.00	Gama	Primary
Cost of negative for facility-based VCT	4.95	3.96	5.94	0.49	Gama	Primary
Cost of positive for stand-alone VCT	150.97	120.78	181.17	10.00	Gama	Primary
Cost of negative for stand-alone VCT	6.39	5.11	7.67	0.64	Gama	Primary
Cost of positive for mobile-based VCT	135.53	108.42	162.63	10.00	Gama	Primary
Cost of negative for mobile-based VCT	3.28	2.63	3.9	0.32	Gama	Primary
Probability of being tested at facility-based VCT	0.050	0.030	0.100	0.006	Beta	Primary
Probability of being tested at stand-alone VCT	0.120	0.080	0.160	0.020	Beta	Primary
Probability of being tested at mobile-based VCT	0.340	0.200	0.400	0.080	Beta	Primary
Test sensitivity	0.997	0.993	1.000	0.001	Beta	[42]
Test specificity	0.992	0.990	1.000	0.002	Beta	[42]
HIV positivity rate: facility VCT	0.032	0.022	0.042	0.001	Beta	Primary
HIV positivity rate: stand-alone VCT	0.043	0.033	0.053	0.001	Beta	Primary
HIV positivity rate: mobile-based VCT	0.025	0.015	0.035	0.001	Beta	Primary

ISSN: 1478-7547