Table 1.

Psychiatric Status Ratings (PSR)

Code	Term	Description
6	Definite Criteria (Severe)	Meets DSM-IV criteria for definite episode and has either prominent psychotic symptoms or extreme impairment in functioning.
5	Definite Criteria	Meets DSM-IV criteria for definite, current episode, but has no prominent psychotic symptoms or extreme impairment in functioning.
4	Marked	Does not meet full DSM-IV criteria but has major symptoms or impairment from the disorder.
3	Partial Remission	Considerably less psychopathology than full criteria with no more than moderate impairment in functioning, but still has obvious evidence of the disorder. This category may represent a worsening or an improvement in the participant's prior status (e.g., a depressive episode with only 2/3 symptoms in a moderate degree, or 1/2 symptoms in a severe degree).
2	Residual	Either participant claims to not be completely back to “usual self,” or rater notes the presence of one or more symptoms of the disorder in no more than a mild degree (e.g., depressive episode with mild insomnia as only residual symptom).
1	Baseline	Participant returns to “usual self” without any residual symptoms of the disorder, but may or may not have significant symptoms from some other condition or disorder (if so, this should be coded under that condition or disorder).

Note: The Psychiatric Status Rating (PSR) was developed to generate analyzable data about the course of a participant's psychopathology. The PSR's are numeric values that have been operationally linked to the DSM-IV criteria. The interviewer reviews the participant's symptoms reported at the last interview, and then probes for changes in symptomotology forward in time to the current interview date. These “change points” are later translated by the interviewer into PSR ratings (indicating the severity level of an episode, as well as whether the participant has recovered or relapsed) for each week of the follow-up period. Although the PSR ratings are made on a week-by-week basis, the participant is not asked about how s/he was feeling during each week; instead, the interviewer utilizes the “change points” reported by the participant, and assigns a corresponding weekly PSR rating based upon these “change points.”