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Reliability of the PROMIS Social Relationships Short Forms
| Short form | Cronbach's alpha | Guttman Split‐half coefficient | Item‐to‐total correlations (Range) |
|---|---|---|---|
| PROMIS Emotional Support Short Form | 0.92 | 0.90 | 0.67–0.82 |
| PROMIS Informational Support Short Form | 0.93 | 0.90 | 0.70–0.85 |
| PROMIS Instrumental Support Short Form | 0.94 | 0.92 | 0.76–0.85 |
