Table 8 21-item OACS day one item factor loadings

OACS item 4: Your ability to walk compared to before the operation?

.888

.318

OACS item 3: Your mobility compared to before the operation?

.872

.354

OACS item 2: Your ability to move compared to before the operation?

.871

.320

OACS item 5: Your ability to walk up stairs compared to before the operation?

.865

.288

OACS item 6: Your ability to walk down stairs compared to before the operation?

.859

.284

OACS item 1: Your ability to stand compared to before the operation?

.841

.337

OACS item 9: Your pain in the affected area when walking as compared to before the operation?

.735

.387

OACS item 14: Your ability to cope at home compared to before the operation?

.684

.436

OACS item 10: Your pain in the affected area compared to before the operation?

.671

.518

OACS item 12: Your pain when getting into bed compared to before the operation?

.668

.482

OACS item 7: Your strength compared to before the operation?

.645

.368

OACS item 8: How comfortable you feel when sitting compared to before the operation?

.588

.514

OACS item 20: Your pain when trying to sleep compared to before the operation?

.437

.766

OACS item 18: Your sleep compared to before the operation?

.314

.755

OACS item 21: Your ability to sleep through the night compared to before the operation?

.325

.751

OACS item 19: How you feel overall compared to before the operation?

.476

.746

OACS item 16: Your mood compared to before the operation?

.292

.728

OACS item 13: Your muscle spasms in the affected area compared to before the operation?

.147

.701

OACS item 11: Your pain in the affected area at night compared to before the operation?

.452

.678

OACS item 15: Your appetite compared to before the operation?

.265

.629

OACS item 17: Your energy level compared to before the operation?

.535

.586