"OQ 45 RCI collstu 3wks des 07"
Essential Features Outcome Questionnaire (OQ-45) (Lambert et al., 1996) Test Construct: The OQ-45 is designed to measure “…patient changes occurring throughout the course of mental health treatments.” (Vermeersch, Lambert, & Burlingame, 2000, p. 246) Practical Considerations: Number of items: 45 items based on 5-point Likert scale Administration time: 10-15 minutes Norm Group Description: Norm groups include: (1) undergraduate college students [N=238], (2) community dwelling adults [N=102], (3) EAP clients [N=504], (4) community mental health center patients [N=100], and (5) university outpatient clinic [N=76]. (Lambert et al., 1996) Format: Self-report Availability: http://www.oqmeasures.com (proprietary) Psychometrics: Reliability, test-retest: (Lambert et al., 1996) Description of (sub)sample: subset of undergraduate student sample (N=157). Information about age (M = 21.13; SD = 3.66) and gender (M = 38%; F = 62%) is assumed to be the same as the norm group. Time interval: 3 weeks T1 Mean (SD): 42.33(16.60) inferred from Table 2 in Lambert et al. (1996, p. 253) Reliability coefficient: r = 0.84 for OQ-45 Total Score Reliability, internal consistency: alpha = 0.93 with subset of student population (N=157) as well as EAP patients (N=289) (Lambert et al., 1996) 1 Validity: See Lambert et al. (1996) Sensitivity: 0.85 (Lambert et al., 1996, p. 255) Specificity: 0.74 (Lambert et al., 1996, pp. 255-256) Sensitivity to Change: Differences between pre-treatment scores and scores at the seventh session revealed “significant improvement” (Lambert et al., 1996, pp. 254-256). Tracking and feedback of this change may help inform and improve patient care (Lambert, 2007). References: Lambert, M. J. (2007). Presidential address: What we have learned from a decade of research aimed at improving psychotherapy outcome in routine care. Psychotherapy Research, 17(1), 1-14. Lambert, M. J., Burlingame, G. M., Umphress, V., Hansen, N. B., vermeersch, D. A., Clouse, G. C., et al. (1996). The reliability and validity of the Outcome Questionnaire. Clinical Psychology and Psychotherapy, 3, 249-258. Vermeersch, D. A., Lambert, M. J., & Burlingame, G. M. (2000). Outcome Questionnaire: Item Sensitivity to Change. Journal of Personality Assessment, 74(2), 242-261. 2