Which outcome metric would most directly indicate that a nursing intervention improved safety for patients?

• A. Point prevalence.
• B. Nursing turnover rate.
• C. RN hours per patient day.
• D. Patient falls with injury.

Answer: (D)

Directly tracking patient safety events provides the clearest signal that a safety-focused nursing intervention is working. A record of patient falls with injury directly reflects an adverse safety outcome; if interventions reduce these incidents, safety has truly improved in a tangible, measurable way.

The other metrics aren’t direct safety indicators. Point prevalence is a snapshot of how many patients have a condition at a moment in time and doesn’t capture safety events caused by care. Nursing turnover rate measures staffing stability and morale, which can influence safety but isn’t a safety event itself. RN hours per patient day gauges staffing resources, which can affect safety risk, but it doesn’t by itself show whether safety outcomes improved.