Biomedical subjects

J A Bergen

Publications and source records attributed to J A Bergen.

3 recordsLinked to original sources

PubMed1989

The course of tardive dyskinesia in patients on long-term neuroleptics.

Results are presented of five consecutive annual examinations using the Abnormal Involuntary Movement Scale for 101 community-based chronic psychiatric patients. These 101 patients had a history of longer and more consistent neuroleptic treatment than the 231 patients who initially entered the study, so no conclusions about prevalence of TD can be drawn. At each examination two-thirds of this group showed signs of TD; however, only 45% were TD positive at most examinations and 24% were best described as having fluctuating TD status. Of those patients who were consistently TD positive, 82% showed no overall significant change in summed AIMS scores, 11% improved and 7% became worse.

Adult↗

PubMed1988

AIMS ratings--repeatability.

In the present study, two raters, a psychologist and a nurse, each made five independent ratings of 30 different video-recorded patient-examinations. Having thus excluded patient fluctuation, individual-rater consistency and between-rater agreement over the 6 weeks of the study are examined. While between-rater agreement was apparently being maintained, mean AIMS scores steadily increased. In the hands of these raters, AIMS items 2 and 4 emerged as very reliable, while items 1, 6, and 7 showed high variability. Some patients appeared to be hard to rate. Differences between the study raters and the author JB highlight the issue: how reproducible is an AIMS rating?

Dyskinesia, Drug-Induced↗

PubMed1984

Tardive dyskinesia: fluctuating patient or fluctuating rater.

Tardive dyskinesia (TD) is usually described as fluctuating in its clinical manifestations. We attempted to quantify fluctuations in TD using the Abnormal Involuntary Movement Scale (AIMS). Three psychiatrists rated multiple video-recorded examinations of four outpatients with mild TD. The unexpected finding was that within-rater variability dominated within-patient variability.

Adult↗