Table 6. Characteristics of screening test.

Cutoff	False negatives	True Negatives	False positives	True positives	Total	Specificity	Sensitivity
Females
All ages
⩾6	695	90 533	1654	124	93 006	98.2%	15%
⩾5	619	87 681	4506	200	93 006	95.1%	24%
⩾4	508	82 099	10 088	311	93 006	89.1%	38%
40–50 years
⩾6	58	40 747	1152	13	41 970	97.3%	18%
⩾5	47	38 885	3014	24	41 970	92.8%	34%
⩾4	37	35 387	6512	34	41 970	84.5%	48%
50–60 years
⩾6	190	25 521	292	35	26 038	98.9%	16%
⩾5	171	25 022	791	54	26 038	96.9%	24%
⩾4	139	23 979	1834	86	26 038	92.9%	38%
60–70 years
⩾6	297	17 274	128	35	17 734	99.3%	11%
⩾5	270	16 978	424	62	17 734	97.6%	19%
⩾4	231	16 353	1049	101	17 734	94.0%	30%
70–75 years
⩾6	150	6991	82	41	7264	98.8%	21%
⩾5	131	6796	277	60	7264	96.1%	31%
⩾4	101	6380	693	90	7264	90.2%	47%
Males
All ages
⩾6	848	71 285	314	88	72 535	99.6%	9%
⩾5	758	70 454	1145	178	72 535	98.4%	19%
⩾4	645	67 923	3676	291	72 535	94.9%	31%
40–50 years
⩾6	72	30 532	102	14	30 720	99.7%	16%
⩾5	68	30 292	342	18	30 720	98.9%	21%
⩾4	58	29 322	1312	28	30 720	95.7%	33%
50–60 years
⩾6	199	21 325	81	11	21 616	99.6%	5%
⩾5	179	21 092	314	31	21 616	98.5%	15%
⩾4	154	20 409	997	56	21 616	95.3%	27%
60–70 years
⩾6	346	13 959	80	36	14 421	99.4%	9%
⩾5	305	13 716	323	77	14 421	97.7%	20%
⩾4	267	13 142	897	115	14 421	93.6%	30%
70–75 years
⩾6	231	5469	51	27	5778	99.1%	10%
⩾5	206	5354	166	52	5778	97.0%	20%
⩾4	166	5050	470	92	5778	91.5%	36%