Table 3.
Diagnostic utility of the number of parent- and child-reported physiological symptoms (NAD as comparison group).
| No. of reported physiological symptoms | Sensitivity | Specificity | PPP | cPPP | NPP | cNPP | Base rate | κ |
|---|---|---|---|---|---|---|---|---|
| Parent-reported symptoms | ||||||||
| 6 | .10 | 1 | 1 | 1 | .42 | .04 | .06 | .07 |
| 5 | .47 | 1 | 1 | 1 | .51 | .24 | .30 | .38 |
| 4 | .77 | .98 | .98 | .95 | .70 | .54 | .51 | .68 |
| 3 | .94 | .95 | .97 | .92 | .87 | .80 | .61 | .86 |
| 2 | .96 | .88 | .94 | .82 | .93 | .89 | .66 | .86 |
| 1 | 1 | .81 | .91 | .74 | 1 | 1 | .71 | .85 |
|
| ||||||||
| Child-reported symptoms | ||||||||
| 6 | .08 | 1 | 1 | 1 | .49 | .04 | .04 | .08 |
| 5 | .19 | .90 | .69 | .34 | .49 | .05 | .14 | .09 |
| 4 | .31 | .86 | .71 | .39 | .52 | .10 | .23 | .16 |
| 3 | .46 | .71 | .65 | .24 | .54 | .13 | .38 | .17 |
| 2 | .56 | .64 | .64 | .23 | .56 | .18 | .47 | .21 |
| 1 | .63 | .60 | .64 | .22 | .58 | .22 | .52 | .22 |
Note. NAD = non anxiety-disordered youth; PPP = positive predictive power; NPP = negative predictive power; c = corrected; base rate = percentage scoring at or above cut score; κ = agreement between classification and Anxiety Disorders Interview Schedule for Children and Parents after correcting for chance.