Table 3 Predictive values of pupil diameter variations for insufficient analgesia (BPS)

Best cutoffs for pupil diameter variation (%)

1

5

13

Sensitivity

0.69 (0.55 – 0.84)

0.85 (0.74 – 0.96)

0.85 (0.74 – 0.96)

Specificity

0.67 (0.52 – 0.81)

0.74 (0.61 – 0.88)

0.78 (0.65 – 0.91)

Positive predictive value

0.50 (0.35 – 0.66)

0.61 (0.46 – 0.76)

0.65 (0.50 – 0.80)

Negative predictive value

0.82 (0.70 – 0.94)

0.91 (0.82 – 1.00)

0.91 (0.83 – 1.00)

Youden index

0.36

0.59

0.62