Table 2.

Nebraska IPP screening results for 2009. Mean number of tests $(\overline{T})$, and accuracy measures, and ( ${\overline{PS}}_e$, ${\overline{PS}}_p$, $\overline{\mathit{PPV}}$, and $\overline{\mathit{NPV}}$), averaged over 1000 implementations, for the 8 strata created by infection, gender, and specimen type. The average number of stages required to decode positive pools and optimal pool sizes are also given. PSOD does not use a common pool size. Gender/specimen individual counts and values of S_e and S_p are in Table 1.

Infection	Gend/Spec	Method	Pool Size	$\overline{T}$	${\overline{PS}}_e$	${\overline{PS}}_p$	$\overline{\mathit{PPV}}$	$\overline{\mathit{NPV}}$	# Stages
Chlamydia	Female/Urine	A	9	2124.4	0.526	0.993	0.874	0.960	2
		SA	9	2131.3	0.526	0.993	0.873	0.960	2
		GA	9	2082.4	0.525	0.994	0.880	0.960	2
		PSOD	–	2533.5	0.650	0.989	0.835	0.970	2
		FIS	13	2051.0	0.581	0.990	0.838	0.964	9.2
	Female/Swab	A	8	6565.3	0.802	0.994	0.907	0.985	2
		SA	8	6472.7	0.802	0.994	0.910	0.985	2
		GA	8	6416.8	0.803	0.994	0.913	0.985	2
		PSOD	–	7029.0	0.862	0.991	0.874	0.990	2
		FIS	8	5909.0	0.842	0.993	0.900	0.988	6.3
	Male/Urine	A	8	3095.2	0.806	0.990	0.876	0.983	2
		SA	8	2973.3	0.807	0.991	0.888	0.983	2
		GA	8	2932.5	0.808	0.991	0.892	0.983	2
		PSOD	–	3243.3	0.869	0.987	0.855	0.988	2
		FIS	8	2690.0	0.843	0.991	0.890	0.986	6.3
	Male/Swab	A	6	1356.4	0.793	0.986	0.911	0.962	2
		SA	6	1344.0	0.794	0.986	0.915	0.963	2
		GA	6	1318.9	0.793	0.987	0.917	0.963	2
		PSOD	–	1278.1	0.870	0.983	0.903	0.976	2
		FIS	7	1213.2	0.823	0.986	0.918	0.968	6.2
Gonorrhea	Female/Urine	A	17	875.3	0.614	0.999	0.921	0.993	2
		SA	17	885.6	0.616	0.999	0.915	0.994	2
		GA	17	876.3	0.617	0.999	0.919	0.994	2
		PSOD	–	1166.4	0.720	0.998	0.845	0.995	2
		FIS	14	862.9	0.697	0.998	0.886	0.995	8.8
	Female/Swab	A	21	2427.1	0.902	0.999	0.909	0.999	2
		SA	21	2333.2	0.903	0.999	0.917	0.999	2
		GA	21	2280.4	0.903	0.999	0.923	0.999	2
		PSOD	–	3046.8	0.935	0.998	0.855	0.999	2
		FIS	21	2112.8	0.926	0.999	0.893	0.999	9.7
	Male/Urine	A	21	1575.8	0.913	0.994	0.775	0.998	2
		SA	21	1325.5	0.913	0.996	0.830	0.998	2
		GA	21	1309.9	0.914	0.996	0.832	0.998	2
		PSOD	–	1676.4	0.942	0.994	0.767	0.999	2
		FIS	22	1300.3	0.927	0.995	0.799	0.998	10.6
	Male/Swab	A	8	929.4	0.956	0.993	0.908	0.997	2
		SA	8	796.7	0.955	0.996	0.943	0.997	2
		GA	8	770.6	0.959	0.996	0.950	0.997	2
		PSOD	–	699.4	0.978	0.993	0.910	0.998	2
		FIS	17	574.8	0.961	0.995	0.942	0.997	7.1