Relationship between millon clinical multiaxial inventory-III borderline personality scale C and length of pscychiatric inpatient stay.

Abstract

This study investigated Borderline Scale C scores on the Millon Clinical Multiaxial Inventory-III and length of psychiatric inpatient stay. Participants were 108 male and 159 female adult psychiatric inpatients of the New Choices program at Hutchinson Hospital, discharged from January, 2003 to April, 2005, who had valid MCMI-III profiles. The final analysis consisted of 267 useable data sets. A causal-comparative, ex post facto design was used to examine institutional archival quantitative data. The retrospective review included patient MCMI-III profiles and computerized hospital records. Results of the Pearson show the correlation between Scale C Base Rate (BR) scores and number of previous admissions was statistically significant, 1'(266) = .14, P < .05. The correlation between length of stay and number of previous admissions was statistically significant, r(266) = .17, P < .01, however, length of stay was not statistically significantly correlated with Scale C BR scores. Having prior admissions is associated with longer lengths of stay: the variability in length of stay due to prior admissions is estimated at 17%. Having prior admissions is associated with having a greater likelihood of an increase in Scale C scores on the MCMI-III: the variability in scores due to prior admissions is estimated at 14%.