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Reliability of PROMIS physical function
| Study | N | Population description | Internal consistency: Cronbach’s alpha | Test-retest reliability: ICC |
|---|---|---|---|---|
| Bartlett et al 201530 | 177 | People with Rheumatoid Arthritis at a routine clinic visit. | 0.99 | |
| Broderick et al 201353 | 98 | People with doctor diagnosed osteoarthritis | 0.95 | |
| Paz et al 201354 | 640 | Adult Spanish-speaking Latinos | 0.99 |
