Obdetector.ir utilizes the Farrington and Farrington Flexible algorithms, which are based on the
family of generalized linear models. It also employs ARIMA time series, cumulative sum control
chart (CUSUM), early aberration reporting system (EARS), and exponentially weighted moving
average (EWMA) algorithms. For each algorithm, two sections are provided: an “Algorithm
Introduction” section briefly explaining each method, and an “Algorithm User Guide” section
defining the parameters of each algorithm. The design of data input panels, parameter settings, and
relevant computations for each algorithm are implemented using the R software.