The training protocol was associated with an average interrater reliability (intraclass correlation coefficient) of .85 and an average interrater agreement of .90. The latter exceeded the numeric cutoff of .80 proposed by Ventura and colleagues (
+11) for interrater agreement and suggests that applying literature-based principles for training that is anchored to a common standard (UCLA consensus-coded tapes) can result in an interrater reliability that is seen more often in clinical research than in service delivery settings (
+13).
Employment of the clinician-rated BPRS consumed ample resources from the hospital units that focused principally on service delivery. Conversely, use of the self-reported OQ was associated with greater "buy in" from providers. More specifically, transferring responsibility for the collection of self-reported patient data to the director of social work generated a second, resource-efficient outcome-assessment source (patient-generated change) while also engaging an important clinical resource: social workers.
Although the cost of self-reported patient-change data was minimal, an equally—and perhaps more—important consideration was its benefit. In other words, were self-reported outcomes data from our patients meaningful? With this patient population, our answer is that it depends. Although the BPRS had been shown to be sensitive to patient change, irrespective of diagnosis (unpublished data, Burlingame GM, Seaman S, Johnson J, et al, 2004), the self-reported measure fared less well. Approximately one-fourth of the patients who were admitted to the facility were either unable (because of the acuity of their illness) or unwilling to complete a self-reported outcome instrument on admission. Specifically, aggregate outcomes data from these patients were either far below expected normative levels for this population or so erratic (item endorsement at both ends of the range) that meaningful interpretation was impossible. Although the proportion of unusable self-reported outcome assessments dropped after the patients stabilized (low scores increased as denial and impaired reality remitted), the out-of-range values made meaningful change difficult to track.
A balancing perspective with respect to self-reported measures was that changes in the remaining 75 percent of cases were moderately correlated with BPRS change noted by clinicians who were independent from the actual treatment of the patient (psychology interns). The correspondence in change profiles between two independent sources is clearly promising, especially when one considers the investment of staff resources in BPRS assessment. This finding suggests that the progress of a significant portion of hospitalized patients might be tracked by using less costly self-reported measures, once patient acuity and cooperation reach appropriate levels. Interestingly, even though some patients with severe and persistent mental illness underreported their absolute degree of symptom distress on the self-reported measure, the actual change trajectory in a portion of this subsample remained similar to that of patients with higher levels of distress.