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Predictive validity of the Hendrich fall risk model II in an acute geriatric unit
Dhurata Ivziku1, Maria Matarese, Claudio Pedone
1Campus Bio-Medico University Hospital, Rome, Italy. d.ivziku@unicampus.it
Background:
Falls are the most common adverse events reported in acute care hospitals, and older patients are the most likely to fall. The risk of falling cannot be completely eliminated, but it can be reduced through the implementation of a fall prevention program. A major evidence-based intervention to prevent falls has been the use of fall-risk assessment tools. Many tools have been increasingly developed in recent years, but most instruments have not been investigated regarding reliability, validity and clinical usefulness.
Objectives:
This study intends to evaluate the predictive validity and inter-rater reliability of Hendrich fall risk model II (HFRM II) in order to identify older patients at risk of falling in geriatric units and recommend its use in clinical practice.
Design:
A prospective descriptive design was used.
Setting:
The study was carried out in a geriatric acute care unit of an Italian University hospital.
Participants:
All over 65 years old patients consecutively admitted to a geriatric acute care unit of an Italian University hospital over 8-month period were enrolled.
Methods:
The patients enrolled were screened for the falls risk by nurses with the HFRM II within 24h of admission. The falls occurring during the patient's hospital stay were registered. Inter-rater reliability, area under the ROC curve, sensitivity, specificity, positive and negative predictive values and time for the administration were evaluated.
Results:
179 elderly patients were included. The inter-rater reliability was 0.87 (95% CI 0.71-1.00). The administration time was about 1min. The most frequently reported risk factors were depression, incontinence, vertigo. Sensitivity and specificity were respectively 86% and 43%. The optimal cut-off score for screening at risk patients was 5 with an area under the ROC curve of 0.72. The risk factors more strongly associated with falls were confusion and depression.
Conclusions:
As falls of older patients are a common problem in acute care settings it is necessary that the nurses use specific validate and reliable fall risk assessment tools in order to implement the most effective prevention measures. Our findings provided supporting evidence to the choice of the HFRM II to screen older patients at risk of falling in acute care settings.
