Total score was decreased significantly at follow-up compared to initial assessment in both RCS and NCS groups ( 23.4 1.30 vs. 11.7 5.8 , t = 10.748 , P < 0.01 ; 23.1 1.3 vs. 15.2 6.7 , t = 5.910 , P < 0.01 , respectively ) .