Comparison between the efficacy of the three treatment modalities
SE, Ulcer
ULCER
The most effective clinical outcome (highest reduction in mean USS) after 12 months treatment was in the betamethasone group (mean 54.6% improvement) (Fig. 
Sequential comparison of the mean Ulcer Severity Scores (± SE) in the three treatment groups. RAS patients (n = 86) followed for 12 months at 3-month intervals (a total of 5 visits). All mean values after treatment were significantly lower than baseline using paired t-test (p < 0.05)