Table 1.

Counts of paired test outcomes in the two sub-populations for the BRSV-antibody tests (BRSV multiplex/BRSV ELISA). For the BRSV multiplex varying cut-off values for the included antigens were used (shown in Fig. 1). The BRSV ELISA cut-off was fixed at sample positive >10 PP, except for alternative 9 where sample positive >50 PP was used.

	BRSV multiplex/BRSV ELISA
	Pop 1				Pop 2
Cut-off alternative	+/+	+/−	−/+	−/−	+/+	+/−	−/+	−/−
1	299	0	35	26	111	16	103	130
2	299	0	35	26	111	16	103	130
3	287	0	47	26	105	16	109	130
4	283	0	51	26	102	16	112	130
5	272	0	62	26	94	12	120	134
6	274	0	60	26	93	15	121	131
7	289	0	45	26	107	12	107	134
8	264	0	70	26	84	11	130	135
9a	295	4	12	49	105	22	18	215

^aBRSV ELISA cut-off: sample positive >50 PP.