The number of tender enthesis sites and total scores for back pain , nocturnal pain , Bath Ankylosing Spondylitis Disease Activity Index , Bath Ankylosing Spondylitis Functional Index , and Juvenile Arthritis Disease Activity Score based on 10-joint counts ( JADAS10 ) decreased by 75 % , 72 % , 81 % , 72 % , 85 % , and 87 % , respectively .