Sensitivity, specificity, positive and negative predictive values (PPV and NPV, respectively) and accuracy (all as percentages), as well as Matthew's correlation coefficient (MCC) for OE and YI whisperers at two levels of hearing loss, 30 and 43 dB HL (4F PTA)
| (4F PTA) dB HL | Group | Sensitivity | Specificity | PPV | NPV | Accuracy | MCC |
|---|---|---|---|---|---|---|---|
| 30 | OE | 19 (18 to 21) | 100 (99 to 100) | 99 (97 to 100) | 40 (38 to 42) | 47 | 0.27 |
| YI | 80 (78 to 81) | 65 (62 to 68) | 81 (79 to 83) | 63 (60 to 66) | 75 | 0.44 | |
| 43 | OE | 56 (52 to 60) | 98 (97 to 99) | 88 (84 to 90) | 90 (89 to 91) | 90 | 0.65 |
| YI | 97 (95 to 98) | 44 (42 to 46) | 30 (28 to 32) | 98 (97 to 99) | 54 | 0.34 |
The 95% CIs shown in parentheses for sensitivity, specificity, PPV and NPV were obtained using the continuity-corrected Wilson score method. Bold type indicates optimum values occur at different levels of hearing loss for each group.
OE, older experienced; NPV, negative predictive value; PPV, positive predictive value; YI, younger inexperienced.