A patient with a knee problem goes to a physical therapist for the first time. At the first visit, the therapist asks him to complete a disease-specific quality of life questionnaire (the WOMAC) before they begin any therapy. His score is 34 WOMAC points. The patient returns to clinic after 3 therapy sessions and is again asked to complete the WOMAC score. This time his score is 40 WOMAC points. If the SEM is 4, what is the conclusion regarding this patient's change in score (use the MDC80)? Recall that the Zalpha value for a 80%CI is 1.28. The therapist can be confident that true change has occurred The therapist cannot be confident that true change has occurred

A patient with a knee problem goes to a physical therapist for the first time. At the first visit, the therapist asks him to complete a disease-specific quality of life questionnaire (the WOMAC) before they begin any therapy. His score is 34 WOMAC points. The patient returns to clinic after 3 therapy sessions and is again asked to complete the WOMAC score. This time his score is 40 WOMAC points. If the SEM is 4, what is the conclusion regarding this patient's change in score (use the MDC80)? Recall that the Zalpha value for a 80%CI is 1.28. The therapist can be confident that true change has occurred The therapist cannot be confident that true change has occurred

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