The mean adjusted Oswestry Disability Index score was 35.95 points ( 95 % confidence interval , 25.42 to 46.47 points ) in the no-brace group and 37.83 points ( 95 % confidence interval , 26.77 to 48.90 points ) in the soft-brace group , with a difference of -1.88 points ( 95 % confidence interval , -7.02 to 9.38 points ) between the groups .