Development of a tool for prediction of falls in rehabilitation settings (Predict_FIRST): a prospective cohort study.

Abstract

To develop and internally validate a simple falls prediction tool for rehabilitation settings. Prospective cohort study. A total of 533 inpatients. Possible predictors of falls were collected from medical records, interview and physical assessment. Falls during inpatient stays were monitored. Fourteen percent of participants fell. A multivariate model to predict falls included: male gender (odds ratio (OR) 2.70, 95% confidence interval (CI) 1.57-4.64), central nervous system medications (OR 2.50, 95% CI 1.47-4.25), a fall in the previous 12 months (OR 2.21, 95% CI 1.07-4.56), frequent toileting (OR 2.14, 95% CI 1.27-3.62) and tandem stance inability (OR 2.00, 95% CI 1.11-3.59). The area under the curve for this model was 0.74 (95% CI 0.68-0.80). The Predict_FIRST tool is a unit weighted adaptation of this model (i.e. 1 point allocated for each predictor) and its area under the curve was 0.73 (95% CI 0.68-0.79). Predicted and actual falls risks corresponded closely. This tool provides a simple way to quantify the probability with which an individual patient will fall during a rehabilitation stay.