Table 1

Summary of study data

Study author	TP	FN	FP	TN	Total
TP: true positive; TN: true negative; FP: false positive; FN: false negative.
Sellors¹⁷	109	16	7	68	200
Hillemanns¹⁸	85	9	32	121	247
Harper²⁶	16	8	11	58	93
Nobbenhuis²³	30	12	0	12	54
Morrison¹⁹	14	0	0	2	16
Wright²¹	170	132	128	985	1415
Rompalo²⁰	72	40	34	173	319
Chang²⁴	144	11	0	1039	1194
Harper²⁵	28	8	4	63	103
Lorenzato²⁷	45	27	10	171	253
Fairley²⁸	31	4	2	11	48
Coutlee²⁹	138	9	24	99	270