Application of diagnostic criteria
As shown in Table 2, all diagnostic criteria had good inter-rater reliability, as did clinical judgement. The DSM-5 NCD criteria as a dichotomous variable (NCD or no NCD) had strong inter-rater reliability (k = 0.711), although with a lower inter-rater reliability than ICD-10 (k = 0.866) and slightly lower than clinical judgement (k = 0.723). When the mild and major NCD categories were separated, the inter-rater reliability remained strong for major NCD (k = 0.727) but was only moderate for mild NCD (k = 0.494).
Concurrent validity analysis showed substantial concurrence of DSM-5 diagnosis with clinical judgement (k = 0.855), but only moderate concurrence of DSM-5 with ICD-10 or DSM-IV criteria….
