Patient safety errors are divided into errors of commission (e.g., giving the wrong medication, hanging the incorrect blood) and errors of omission (e.g., not giving a medication, failing to feed a patient). Missed nursing care involves errors of omission. The Agency for Healthcare Research and Quality (AHRQ, n.d.) has pointed out that there are, undoubtedly, many more errors of omission than commission. To date, the patient safety movement has dealt primarily with errors of commission. However, AHRQ has stated that there are many more errors of omission than commission and, thus, the impact of errors of omission is vastly greater.