Outcome Measurement Plan

Outcome Measure / Conceptual definition / Operational Definition / Reliability and Validity / Frequency of measurement
Health related quality of life / Not stated
CDC definition: Health-related quality of life (HRQoL) is a multi-dimensional concept that includes domains related to physical, mental, emotional and social functioning. It / AIMS2
(walking and bending subscale / Reliability: Cronbach’s alpha = 0.72-0.91; test-re-test reliability = 0.78-0.94
Validity: construct and criterion established / Baseline
Intervention period: 3,6,9,12 months
Post-intervention:
15, 18 months
goes beyond direct measures of population health, life expectancy and causes of death, and focuses on the impact health status has on quality of life. / SF-36 / Reliability: Cronbach’s alpha = 0.74 - 0.96; test-re-test reliability = 0.75-0.93
Validity: moderate correlations with other QOL measures / Baseline
Intervention period: 3,6,9,12 months
Post-intervention:
15, 18 months
Functional status / Not stated; many definitions exist
From Leidy 1994 (Nursing Research): An individual's ability to perform normal daily activities required to meet basic needs, / WOMAC / Reliability: cite reliability in individuals with hip and knee rheumatic conditions*
Validity: cites validity* / Baseline
Intervention period: 3,6,9,12 months
Post-intervention:
15, 18 months
Fulfill usual roles, and maintain health and well‐being. / 6 minute walk test / Reliability: not reported
Validity: not reported / Baseline
Intervention period: 3,6,9,12 months
Post-intervention:
15, 18 months
Timed-up and Go test / Reliability: not reported
Validity: not reported / Baseline
Intervention period: 3,6,9,12 months
Post-intervention:
15, 18 months
Level of physical activity / Not stated
WHO definition: Physical activity is defined as any bodily movement produced by skeletal muscles that requires energy expenditure / 7-day PAR / Reliability: not reported
Validity: cites validity* / Not clear how often patients completed, but data analyzed at: Baseline
12 months
18 months

*If using this instrument for measurement, I would go back to primary literature citing psychometric properties in order to ensure adequate reliability and validity.