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New Measurement Scale for Anxiety Outcomes

by Trilok Kapur on  March 12, 2010 at 5:14 PM Mental Health News   - G J E 4
 New Measurement Scale for Anxiety Outcomes
A new questionnaire and outcomes measurement scale that can turn out to be a reliable and valid measure of anxiety has been developed by researchers at Rhode Island Hospital.
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The scale can easily be incorporated into routine clinical practice when treating psychiatric disorders.

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If scales are to be incorporated into clinical practices, it is necessary to develop measures that are feasible and have good psychometric properties.

Keeping this in mind, Dr. Mark Zimmerman and his colleagues developed the Clinically Useful Anxiety Outcome Scale (CUXOS).

"If the optimal delivery of mental health treatment ultimately depends on examining outcome, then precise, reliable, valid, informative, and user-friendly measurement is critical to evaluating the quality and efficiency of care in clinical practice. Clinicians are already overburdened with paperwork, and adding to this load by requiring repeated detailed evaluations using instruments that are available is unlikely to meet success," said Zimmerman.

The researchers note that only 11 percent of the psychiatrists are routinely using standardized measures to assess outcomes when treating depression or anxiety disorders.

The CUXOS was designed to be brief for patients to complete and then quickly scored by a clinician. In their study, nearly 1,000 psychiatric outpatients completed the CUXOS, which took less than one and a half minutes to complete.

Clinicians rated the severity of depression, anxiety, and anger on standardized scales and each CUXOS could be scored in less than 15 seconds.

The researchers also had a subset of patients complete other self-report symptom severity scales in order to examine discriminant and convergent validity.

Another subset completed the CUXOS twice in order to examine test-retest reliability.

In addition, sensitivity to change was examined in patients with panic disorder and generalized anxiety disorder.

Zimmerman said that the scale was found to have high internal consistency and test-retest reliability.

Further, it was more highly correlated with other self-report measures of anxiety than with measures of depression, substance abuse problems, eating disorders and anger.

It was also more closely aligned with clinician severity ratings of anxiety than depression and anger, and the CUXOS scores were significantly higher in psychiatric outpatients with anxiety disorders than other psychiatric disorders.

Finally, it was found to be a valid measure of symptom change.

"We believe that the use of standardized scales should be the standard of care and routinely used to measure outcome when treating psychiatric disorders. Only in this way can we ensure that we are having an impact on our patients," said Zimmerman.

The study appears online in the Journal of Clinical Psychiatry.

Source: ANI
TRI
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