Table 3.
Sensitivity, specificity, positive and negative predictive values, and regression statistics of week 2 diagnoses to predict week 9 depression and anxiety
| Regression Statistics | ||||||||
|---|---|---|---|---|---|---|---|---|
| Week 2 Predictor | χ2 | P | Odds Ratio | Positive Predictive Value | Negative Predictive Value | Sensitivity | Specificity | Percentage Correctly Identified |
| Outcome: Depression at week 9 | ||||||||
| ASD (DSM‐5) | 14.18 | <.0001 | 5.04 | 0.54 | 0.81 | 0.31 | 0.92 | 77.6 |
| 4+ symptoms | 20.64 | <.0001 | 5.01 | 0.47 | 0.85 | 0.52 | 0.82 | 75.1 |
| ASD (DSM‐IV) | 14.21 | <.0001 | 4.36 | 0.49 | 0.82 | 0.38 | 0.88 | 76.1 |
| “Two‐week PTSD” (DSM‐5)a | 18.40 | <.0001 | 5.40 | 0.53 | 0.83 | 0.40 | 0.89 | 77.6 |
| Preschool PTSD | 24.33 | <.0001 | 6.53 | 0.55 | 0.84 | 0.46 | 0.89 | 78.5 |
| Outcome: Anxiety at week 9 | ||||||||
| ASD (DSM‐5) | 25.60 | <.0001 | 11.92 | 0.46 | 0.93 | 0.52 | 0.92 | 86.8 |
| ‐ 4+ symptoms | 22.84 | <.0001 | 8.50 | 0.32 | 0.95 | 0.68 | 0.80 | 78.5 |
| ASD (DSM‐IV) | 21.71 | <.0001 | 8.69 | 0.38 | 0.93 | 0.56 | 0.87 | 83.4 |
| “Early PTSD” (DSM‐5 PTSD) | 22.54 | <.0001 | 9.14 | 0.39 | 0.93 | 0.56 | 0.88 | 83.9 |
| Preschool PTSD | 20.84 | <.0001 | 5.46 | 0.40 | 0.95 | 0.64 | 0.87 | 83.9 |
Note. Positive predictive value = Likelihood that someone with diagnosis at week 2 would have the relevant diagnosis at week 9. Negative predictive value = Likelihood that someone without a given diagnosis at week 2 would not go on to have the relevant diagnosis at week 9. Sensitivity = Likelihood that someone with diagnosis at week 9 would have previously met criteria for relevant diagnosis at week 2. Specificity = Likelihood that someone without diagnosis at week 9 would not have met criteria for the relevant diagnosis at week 2.
“Two‐week PTSD” refers to an “early PTSD” algorithm, that is, ignores the requirement that symptoms be present for at least 4 weeks.