Percent of repeat CBCs and BMPs within 1 calendar day on the HM service: control p-chart showing the secondary outcome measure with annotations of small tests of change. Percent of repeat CBCs and BMPs within 1 calendar day on the HM service: control p-chart showing the secondary outcome measure with annotations of small tests of change. The x-axis is labeled with every other week, but data points are weekly. David P. Johnson et al. Hospital Pediatrics 2016;6:1-8 ©2016 by American Academy of Pediatrics