"A quality improvement team is interested in determining the percentage of medication orders that are delivered to nurses' stations within one hour of the order's receipt in the pharmacy. Before collecting data on this question, the team should determine whether it believes that this percentage could differ by floor, time of day, day of week, type of medication ordered, pharmacist on duty, or volume of orders received. If the team believes that one or more of these factors will influence the outcome, it should take steps to ensure that it collects the data relevant to these factors each time the pharmacy receives an order." This example explains:
- How stratification could be applied to pharmacy
- Is there any need to sample the data
- Targets and goals of measurement
- Confidentiality issues in measurement