The mean VAS scores before treatment and those for early , delayed and long-term response in the 0.5 - and 1.0-Gy groups were 56.823.7 and 53.221.8 ( p = 0.16 ) ; 38.236.1 and 34.024.5 ( p = 0.19 ) ; 33.027.2 and 23.722.7 ( p = 0.04 ) and 27.925.8 and 32.126.9 ( p = 0.25 ) , respectively .