Functional/physiological parameters |
Activities of daily living |
Self-report Katz instrument of activities of daily living (ADLs) scale |
At baseline and exit (at 8 weeks) |
Reliability 0.87 to 0.94 [46,47] good construct and content validity [48]. |
Instrumental activities of daily living |
Self-report Lawton instrumental activities of daily living (IADLs) scale |
At baseline and exit (8 weeks) |
Inter-rater reliability .85. The validity was tested in 180 subjects, all correlations significant at .01 or .05 level [49] |
Health-related quality of life |
CDC HRQOL-4 self-report (health station) |
Monthly |
Good construct & concurrent validity [50]; test–retest reliability 0.58–0.75 & strong internal validity [51] |
Blood pressure, weight, heart rate, oxygen saturation, finger stick blood glucose |
Health station peripherals |
Weekly |
FDA approved class II medical devices. Meters will be tested by staff to ensure quality control against high/low standards. |
Height |
Assessed by staff |
At baseline |
|
Gait speed |
GAITRite |
Weekly |
CV% 3.5% |
Stride length |
|
|
CV% R: 3.5% L: 3.1% |
Stride width |
|
|
CV% 15.2% [52] |
Double limb support time |
|
|
ICC 44–57% [37] |
Stride to stride variability |
|
|
ICC 91–99% [53] |
Cognitive/mental parameters |
Speed of processing and response time; working memory; task shifting; planning |
CogniFit |
3 times a week |
Internal consistency 0.70, test–retest reliability 0.80 [34] 72
|
Mood assessment |
Patient health questionnaire (PHQ-2): a two item tool to assess the frequency of depressed mood and anhedonia. |
At baseline and exit |
Sensitivity of 83% and a specificity of 92% for major depression [54] |
Social well-being |
Social support |
Multidimensional scale of perceived social support (MSPSS): 12-item tool to measure one’s perception of social support from family, friends or others |
At baseline and exit |
Cronbach’s alpha 0.88 test–retest reliability 0.85 [55] |
Spiritual well-being |
Spiritual perspectives |
Self-report spiritual perspective scale (SPS): 10-item tool to measure the extent to which individuals hold spiritual beliefs and engage in spiritually related behaviors [56] |
At baseline and exit |
Cronbach’s alpha 0.93–0.95; test–retest 0.57–0.68 [56] |