Effect of Laser Irradiation at Different Wavelengths (940, 808, and 658 nm) on Pressure Ulcer Healing: Results from a Clinical Study

Figure 4

Healing rates (percentage number of completely healed ulcers) at the follow-up analysis (after 3 months). *Fisher test. Groups I and III: 16.66% versus 58.82%, 𝑃<0.001, groups II and III: 16.66% versus 58.82%, 𝑃<0.001, and groups III and IV: 58.82% versus 16.66%, 𝑃<0.001.