The patient is evaluated in 6 categories: sensory perception, moisture, activity, mobility, nutrition, and friction and shear. Pressure sore risk increases as the score decreases: 15–16 = mild risk; 12–14 = moderate risk; 12 = serious risk. Adapted from Braden B, Bergstrom N: Pressure ulcers in adults: Prediction and prevention. Clinical Practice Guideline , no. 3, pp 14–17, May 1992. US Department of Health and Human Services.