RESULTS	All improvements were equal between groups apart from the SF36 domain of Bodily Pain , where C2 saw an improvement of 12.8 [ 95 % confidence interval ( CI ) : 4.8-20 .8 ] points over C3-4 participants ( P = 0.002 ) , who also suffered more recurrence [ odds ratio ( OR ) = 2.7 , 95 % CI : 1.2-6 .1 , P = 0.022 ] and required more secondary procedures ( OR = 4.4 , 95 % CI : 1.2-16 .3 , P = 0.028 ) .\