After therapy , both therapies resulted in a significant decrease in mean TCS ( 51.4 % [ 95 % CI , 39.7 % to 63.0 % ] for clobetasol ointment [ P < .001 ] and 35.6 % [ 95 % CI , 18.2 % to 53.1 % ] for UV-A1 phototherapy [ P = .006 ] ) .