In our previous newsletter, we discussed CHPSO’s new “No Nulls” initiative to improve data quality and how member organizations can help in the effort. This article will review the data pipeline involved in the process, touch on some of the challenges and successes we’ve observed in the effort so far, and suggest ways we can work together in a two-pronged approach to improve end-to-end data quality. The local event reporting system, which is a large component of the Patient Safety Evaluation System (PSES), is often considered to be the starting point of the patient safety data pipeline. A PSES is used to collect, analyze, and manage data for reporting to a Patient Safety Organization (PSO). However, this confidential Patient Safety Work Product (PSWP) data maintained in the PSES comes from several sources. Some of the data are sourced from a hospital’s Electronic Health Record (EHR) system, and some from patient safety risk analyses and event audits/reviews. Physically, the resulting data bundle usually ends up in an automated event recording system from a variety of vendor supported systems. Each member’s set up is unique and understanding the components and data flow housed within your specific hospital or health care system is critical in understanding where data might slip through the cracks and end up Null.