The objective was to find the predictive accuracy of MASS and two new systems namely Appendicitis Inflammatory Response (AIR) score and Raja Isteri Pengiran Anak Saleha Appendicitis (RIPASA) score, in
Street and sidewalk cleanliness ratings. NOTE: Due to a software coding error that’s since been corrected, some cleanliness rating data between November 2018 and July 2019 was found to be incomplete,
