Table 4.
Sensitivity, Specificity, and Positive Predictive Value at Different Cut Points on the Mean Attention-Deficit/Hyperactivity Disorder-Related PTP Score Compared with Rate of Positive Response on CGI-I in the Trial (N = 58)
| PTP cutoff score | CGI-I positive responsea | CGI-I negative responseb | Sensitivity (%) | Specificity (%) | PPV (%) |
|---|---|---|---|---|---|
| ≤3.5 | 39 (T+) | 3 (F+) | 88.6 | 78.6 | 92.9 |
| >3.5 | 5 (F−) | 11 (T−) | |||
| ≤3.25 | 36 | 3 | 81.8 | 78.6 | 92.3 |
| >3.25 | 8 | 11 | |||
| ≤3.0 | 30 | 3 | 68.2 | 78.6 | 90.9 |
| >3.0 | 14 | 11 |
Sensitivity = T+ ÷ (T+) + (F−); Specificity = T− ÷ (T−) + (F+); Positive predictive value = T+ ÷ (T+) + (F+).
a
At least 1 week Much Improved or Very Much Improved on the CGI-I.
b
All other scores on CGI-I.
CGI-I, Clinical Global Impressions-Improvement; PPV, positive predictive value; PTPs, parent target problems; SE, standard error.