Table 7.
Receiver Operating Characteristic Curve Discriminant Ability of the Girls Questionnaire for Autism Spectrum Condition
| Cutoff score | Sensitivity % | Specificity % | Correctly predicteda | False alarm casesa | Missesa | Correct rejectionsa | Odds of an errora |
|---|---|---|---|---|---|---|---|
| >31 | 100.0 | 0.0 | 10.00 | 990.00 | — | — | 99.00 |
| >33 | 100.0 | 0.6 | 10.00 | 984.00 | — | 6.00 | 61.50 |
| >35 | 100.0 | 1.2 | 10.00 | 978.00 | — | 12.00 | 44.45 |
| >37 | 100.0 | 1.9 | 10.00 | 971.00 | — | 19.00 | 33.48 |
| >39 | 100.0 | 2.2 | 10.00 | 968.00 | — | 22.00 | 30.25 |
| >40 | 100.0 | 3.4 | 10.00 | 956.00 | — | 34.00 | 21.73 |
| >41 | 100.0 | 4.7 | 10.00 | 943.00 | — | 47.00 | 16.54 |
| >42 | 100.0 | 5.6 | 10.00 | 935.00 | — | 55.00 | 14.38 |
| >43 | 100.0 | 6.8 | 10.00 | 923.00 | — | 67.00 | 11.99 |
| >44 | 99.7 | 7.8 | 10.00 | 913.00 | — | 77.00 | 10.49 |
| >45 | 99.7 | 9.6 | 10.00 | 895.00 | — | 95.00 | 8.52 |
| >46 | 99.4 | 11.8 | 10.00 | 873.00 | — | 117.00 | 6.87 |
| >47 | 99.4 | 13.0 | 10.00 | 861.00 | — | 129.00 | 6.19 |
| >48 | 99.1 | 14.9 | 10.00 | 842.00 | — | 148.00 | 5.33 |
| >49 | 99.1 | 17.7 | 10.00 | 815.00 | — | 175.00 | 4.41 |
| >50 | 99.1 | 20.5 | 10.00 | 787.00 | — | 203.00 | 3.69 |
| >51 | 98.9 | 23.6 | 10.00 | 756.00 | — | 234.00 | 3.10 |
| >52 | 98.6 | 27.0 | 10.00 | 723.00 | — | 267.00 | 2.61 |
| >53 | 98.0 | 29.5 | 10.00 | 698.00 | — | 292.00 | 2.31 |
| >54 | 97.4 | 33.5 | 10.00 | 658.00 | — | 332.00 | 1.92 |
| >55 | 96.0 | 37.0 | 10.00 | 624.00 | — | 366.00 | 1.66 |
| >56 | 95.1 | 42.2 | 10.00 | 572.00 | — | 418.00 | 1.34 |
| >57 | 94.0 | 46.3 | 9.00 | 532.00 | 1.00 | 458.00 | 1.14 |
| >58 | 92.0 | 50.3 | 9.00 | 492.00 | 1.00 | 498.00 | 0.97 |
| >59 | 91.1 | 52.5 | 9.00 | 470.00 | 1.00 | 520.00 | 0.89 |
| >60 | 88.9 | 56.2 | 9.00 | 434.00 | 1.00 | 556.00 | 0.77 |
| >61 | 87.4 | 58.7 | 9.00 | 409.00 | 1.00 | 581.00 | 0.69 |
| >62 | 82.9 | 61.2 | 8.00 | 384.00 | 2.00 | 606.00 | 0.63 |
| >63 | 79.1 | 66.1 | 8.00 | 336.00 | 2.00 | 654.00 | 0.51 |
| >64 | 76.6 | 69.6 | 8.00 | 301.00 | 2.00 | 689.00 | 0.43 |
| >65 | 71.4 | 73.0 | 7.00 | 267.00 | 3.00 | 723.00 | 0.37 |
| >66 | 67.7 | 76.4 | 7.00 | 234.00 | 3.00 | 756.00 | 0.31 |
| >67 | 64.0 | 80.1 | 6.00 | 197.00 | 4.00 | 793.00 | 0.25 |
| >68 | 60.0 | 84.2 | 6.00 | 156.00 | 4.00 | 834.00 | 0.19 |
| >69 | 56.3 | 86.0 | 6.00 | 139.00 | 4.00 | 851.00 | 0.17 |
| >70 | 50.3 | 89.1 | 5.00 | 108.00 | 5.00 | 882.00 | 0.13 |
| >71 | 44.0 | 91.6 | 4.00 | 83.00 | 6.00 | 907.00 | 0.10 |
| >72 | 35.4 | 94.1 | 4.00 | 58.00 | 6.00 | 932.00 | 0.07 |
| >73 | 30.0 | 96.6 | 3.00 | 34.00 | 7.00 | 956.00 | 0.04 |
| >74 | 24.3 | 96.9 | 2.00 | 31.00 | 8.00 | 959.00 | 0.04 |
| >75 | 18.9 | 98.8 | 2.00 | 12.00 | 8.00 | 978.00 | 0.02 |
| >75 | 15.7 | 99.1 | 2.00 | 9.00 | 8.00 | 981.00 | 0.02 |
| >76 | 15.4 | 99.1 | 2.00 | 9.00 | 8.00 | 981.00 | 0.02 |
| >77 | 13.1 | 99.7 | 1.00 | 3.00 | 9.00 | 987.00 | 0.01 |
| >78 | 10.3 | 99.7 | 1.00 | 3.00 | 9.00 | 987.00 | 0.01 |
| >79 | 8.3 | 99.7 | 1.00 | 3.00 | 9.00 | 987.00 | 0.01 |
| >80 | 5.7 | 99.7 | 1.00 | 3.00 | 9.00 | 987.00 | 0.01 |
| >80 | 3.7 | 99.7 | — | 3.00 | 10.00 | 987.00 | 0.01 |
| >81 | 3.4 | 99.7 | — | 3.00 | 10.00 | 987.00 | 0.01 |
| >82 | 2.6 | 100.0 | — | — | 10.00 | 990.00 | 0.01 |
| >83 | 1.4 | 100.0 | — | — | 10.00 | 990.00 | 0.01 |
| >84 | 0.0 | 100.0 | — | — | 10.00 | 990.00 | 0.01 |
a
Correctly predicted and false alarms from 1000 presentations assuming 1.0% of all cases have autism.