Predicting pressure ulcer risk.

The Braden scale is a widely used pressure risk assessment tool and it is, therefore, essential to ensure that the tool is reliable and valid. Several studies have questioned the predictive validity of the Braden scale (Nixon and McGough, 2001). Bergstrom et al (1998) used a quantitative research paradigm to evaluate the effectiveness of the Braden scale in predicting which patients who are at risk of developing pressure ulcers in three different clinical settings in the USA. The study aimed to determine at what point a pressure ulcer will develop, the critical cut-off point, and whether this cut-off point can be duplicated. The authors also hoped to establish optimum timing for risk assessments.