Table 2:
Early-stage treatment Infliximab level cut-offs with sensitivity, specificity and positive likelihood ratio (LR+) values.
Week
Cut-off
Sensitivity
(95% CI)
Specificity
(95% CI)
LR+
2
21.2 μg/mL
67% (44-84)
86% (70-95)
4.8
6
4.4 μg/mL
70% (45-88)
95% (83-99)
14
14
0.4 μg/mL
83% (35-99)
89% (75-97)
7.9
22
0.2 μg/mL
100% (15-100)
94% (81-99)
18
CI, confidence interval; LR, Likelihood Ratio.