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Table 3 Diagnostical thresholds of the PDS

From: Psychometric evaluation of a screening question for persistent depressive disorder

Threshold for last period without complaints κ p sensitivity specificity J
More than 1 year ago (a vs. b-e) .30 .002 90% 38% .28
More than 2 years ago (a-b vs. c-e) .48 < .001 85% 63% .48
More than 5 years ago (a-c vs. d-e) .48 < .001 59% 97% .56
More than 10 years ago (a-d vs. e) .18 .007 26% 97% .23
  1. Note. PDS persistent depression screener. The table shows the calculated value of Kappa (K) with the associated level of significance (p), sensitivity, specificity and the resulting Youden-Index (J) for varying diagnostical thresholds of the PDS