Table 1.
Concordance of CIDI/DSM‐IV GAD symptoms with K‐SADS ratings in the NCS‐A clinical reappraisal sample (n = 347)
| Prevalence | Concordancea | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| K‐SADS | CIDI | SN | SP | PPV | NPV | Kappa | AUC | ||||||||
| Percent | (SE) | Percent | (SE) | χ 2 | Est | (SE) | Est | (SE) | Est | (SE) | Est | (SE) | Est | ||
| Criterion A: Excessive worry | 9.0 | (1.7) | 3.7 | (0.9) | 13.3* | 25.2 | (7.4) | 98.4 | (0.7) | 61.2 | (12.8) | 93.0 | (1.6) | 0.32 | 0.62 |
| Criterion B: Trouble controlling worry | 8.6 | (1.6) | 28.1 | (2.7) | 53.0* | 63.1 | (9.8) | 75.2 | (2.8) | 19.3 | (4.0) | 95.6 | (1.5) | 0.19 | 0.69 |
| Criterion C: Physical symptoms | 8.9 | (1.6) | 17.7 | (2.2) | 16.8* | 53.2 | (9.2) | 85.8 | (2.2) | 26.9 | (5.6) | 94.9 | (1.4) | 0.27 | 0.70 |
| Criterion D: Focus not other Axis I disorder | 13.2 | (2.0) | 59.7 | (3.2) | 145.7* | 84.1 | (6.7) | 44.0 | (3.4) | 18.6 | (2.9) | 94.8 | (2.4) | 0.11 | 0.64 |
| Criterion E: Impairment | 10.6 | (1.8) | 25.2 | (2.5) | 28.5* | 60.4 | (9.1) | 78.9 | (2.6) | 25.3 | (4.5) | 94.4 | (1.8) | 0.24 | 0.70 |
| Criterion F: Not due to substance | 14.2 | (2.1) | 13.1 | (2.0) | 0.2 | 29.5 | (6.5) | 89.6 | (2.0) | 32.1 | (6.9) | 88.5 | (2.2) | 0.20 | 0.60 |
| Overall diagnosis: (A, B, C, D, E, F) | 3.3 | (1.0) | 2.4 | (0.8) | 1.2 | 57.2 | (13.9) | 99.5 | (0.3) | 78.8 | (12.6) | 98.6 | (0.6) | 0.65 | 0.78 |
a
SN, sensitivity; SP, specificity; PPV, positive predictive value; NPV, negative predictive value; Kappa, Cohen's Kappa; AUC, area under the receiver operating characteristic curve.
*
The prevalence estimate based on the CIDI differs significantly from the estimate based on the K‐SADS at 0.05 level, two‐sided test.