Table 2 Scores and fit indices of CFA for PROMIS-29 domains (n = 327)
| Model | Mean | SD | CFI | SRMR | RMSEA | AIC | Cranach’s α |
|---|---|---|---|---|---|---|---|
| Seven-factor model | 0.97 | 0.03 | 0.06 | 918.38 | |||
| Single-factor model | |||||||
| Physical function | 46.1 | 8.3 | 0.95 | 0.03 | 0.31 | 79.02 | 0.95 |
| Anxiety | 53.8 | 8.4 | 0.99 | 0.01 | 0.04 | 18.97 | 0.95 |
| Depression | 50.4 | 8.0 | 0.98 | 0.02 | 0.19 | 41.16 | 0.93 |
| Fatigue | 47.2 | 9.2 | 0.99 | 0.01 | 0.13 | 28.93 | 0.97 |
| Sleep Disturbance | 47.8 | 9.1 | 0.94 | 0.04 | 0.33 | 89.92 | 0.92 |
| Ability to participate in social roles and activities | 52.9 | 8.3 | 0.97 | 0.02 | 0.26 | 62.59 | 0.97 |
| Pain Interference | 47.8 | 8.6 | 0.99 | 0.01 | 0.21 | 45.36 | 0.99 |