Sample size determination for point-of-care COVID-19 diagnostic tests: a Bayesian approach

Table 7 Proportion of times the posterior credible interval widths attain the target widths when the target assurance is 0.9

	Same				1% smaller				5% smaller				10% smaller
\(\rho _T\)	0.05	0.1	0.2	0.3	0.05	0.1	0.2	0.3	0.05	0.1	0.2	0.3	0.05	0.1	0.2	0.3
\(n_c\)	Sensitivity
10	1.00	0.95	0.92	0.91	1.00	0.94	0.90	0.89	0.99	0.91	0.84	0.82	0.98	0.86	0.74	0.71
30	0.99	0.96	0.93	0.92	0.99	0.95	0.92	0.90	0.98	0.91	0.86	0.84	0.97	0.85	0.77	0.74
50	0.99	0.97	0.96	0.96	0.98	0.96	0.95	0.96	0.98	0.95	0.94	0.94	0.97	0.93	0.92	0.92
\(n_c\)	Specificity
10	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00	0.94	0.94	0.93	0.93
30	0.96	0.96	0.96	0.96	0.94	0.94	0.94	0.94	0.75	0.76	0.76	0.75	0.38	0.38	0.38	0.38
50	0.96	0.96	0.96	0.96	0.94	0.94	0.93	0.93	0.75	0.75	0.75	0.74	0.37	0.37	0.37	0.37
\(n_c\)	Both
10	1.00	0.95	0.97	1.00	1.00	0.94	0.96	1.00	0.99	0.90	0.92	1.00	0.98	0.85	0.84	0.94
30	0.99	0.96	0.98	0.99	0.99	0.95	0.97	0.97	0.98	0.92	0.91	0.82	0.96	0.85	0.70	0.41
50	0.98	0.97	0.96	0.96	0.96	0.95	0.95	0.94	0.88	0.84	0.77	0.74	0.70	0.55	0.37	0.36

ISSN: 2397-7523