Psychometric evaluation of a screening question for persistent depressive disorder

BMC Psychiatry

Table 3 Diagnostical thresholds of the PDS

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

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

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