Inter-rater reliability of global assessment of functioning in a clinical setting.

Four studies on the inter-rater reliability of a proposed Axis V version for DSM-IV and of the CGAS involving 162 child and adolescent patients and 20 clinicians showed moderate agreement (intraclass correlation: 0.53-0.66). This was comparable to previous versions of Axis V, but lower than that reported for the CGAS. More detailed description of anchor points did not increase reliability nor there were differences in agreement when rating current or previous functioning.