A Cartoon Version of Braden Scale to Assess the Risk of Pressure Injury: Content Validity and Interrater Reliability Study.

Abstract

The Braden Scale is widely used to assess the risk of pressure injury. However, the vague literal description of the items creates difficulties for bedside nurses and limits its sensitivity. To solve this problem, we developed a cartoon version of the Braden scale (CVBS) to improve the pressure injury risk assessment ability of bedside nurses. The CVBS was constructed by two nurses, and the final version was determined through a two-round Delphi consultation. The scale's content validity was calculated based on expert ratings. A total of 265 patients were evaluated simultaneously with the CVBS by 119 bedside nurses and 46 wound care specialists; and 114 bedside nurses and the same 46 wound care specialists evaluated 239 patients with the original Braden scale (OBS). The interrater reliability between the two groups was calculated as Kappa value, and then the Kappa values of the two versions were compared. The content validity for the draft scale was not good enough. After modification, the indices of all the items in the final CVBS reached 1.00. The Kappa value of the OBS was 0.69 (95% CI 0.61-0.76); for each item, it ranged from 0.60 to 0.80. The interrater reliabilities of the CVBS were higher than those of the OBS, with an overall kappa value of 0.87 (95% CI 0.81-0.92) and a range of 0.77 to 0.93 for each item. The differences between the Kappa values of the CVBS and those of the OBS were all statistically significant. The CVBS had good validity and showed higher interrater reliability than the OBS, indicating that it may improve bedside nurses' ability to assess pressure injury risk.