Letter to the Editor: On moving average and internal quality control

In a recent study [1], Bayat et al. raised concerns with the simulation of our approach for comparing moving average (MA) approaches for quality control (QC) with traditional ('Westgard') QC practices [2]. They contended that it was odd to simulate 10–20 QC measurements per evaluation event while having only 1 to 2 measurements for traditional QC. We believe this is a misunderstanding of our methods and the concept of block size, which is a relatively new application to quality control.