Background: Previous studies have examined when activities of daily living (ADL) recovery more than six months after surgery can be predicted, and how much accuracy the predictors have.
Objective: The purpose of this study was to determine the predictors of ADL decline and evaluate their accuracies one year post-operation for hip-fracture patients.
Methods: We studied patients who underwent hip fracture surgery and were able to walk independently pre-operatively. The predictors of ADL declined one year post-operation, as analyzed using data of the basic medical attributes of the patients, including pain, 30-s chair-stand test, dementia [using the Revised Hasegawa Dementia Scale (HDS-R)], and walking/mobility style [using Barthel Index (BI)]. Using a receiver operating curve (ROC) curve, the cut-off value for each significant predictor was determined in the logistic regression analysis. To calculate the cut-off values and diagnostic performances of each of the extraction factors.
Results: The data of 36 patients were collected over a period of one year. The prior probability of ADL decline at one year post-operation was 44.4%. The results of logistic regression analyses showed that the score of HDS-R at admission and the walking/mobility BI score at three weeks post-operation were significant predictors of the one year post-operative decline in ADL. The results of the ROC analyses showed that the cut-off value of the HDS-R score at admission was < 23 points. The posterior probability increased to 62.0%. In contrast, the cut-off value of the walking/mobility BI score was 0 points. The posterior probability increased to 91.0%.
Conclusion: The ADL decline of the patients who underwent hip fracture surgery at one year after surgery can be predicted at three weeks post-operation.
Keywords: ADL; Hip fracture; one year post-operation; surgery.