TABLE 5.

LRs for five result ranges for each of the five assays evaluated

Test (manufacturer's cutoff)Result rangeInfected cowsNoninfected cowsLRa
No.%No.%
A (≥0.25)<0.1021050.625270.20.72
0.10-0.258520.59225.60.80
0.26-0.40215.1123.31.51
0.41-1.00266.320.611.25
≥1.007317.610.363.15
B (≥0.100)<0.0015938.128679.70.48
0.000-0.05011627.86518.11.54
0.051-0.100235.572.02.83
0.101-0.5006315.110.354.24
≥0.5005613.400.0
C (≥70)<1021351.431788.30.58
10-205112.3361.01.23
21-40245.861.73.47
41-70102.400.0
≥7011628.000.0
D (≥125)0-759832.722262.00.53
76-1256722.38222.90.98
126-2504013.34512.61.06
251-5003010.072.05.11
≥5006521.720.638.78
E (≥0.10)<0.0021358.729182.70.71
0.00-0.054211.65814.80.78
0.06-0.10123.320.65.50
0.11-0.15133.610.312.61
≥0.158322.900.0
  • a The values reported were derived from the original data and may differ slightly from the LRs calculated from the percentages in the table due to rounding.