What rate of home chemotherapy administration errors occurred per 100 patients in one pediatric study?

• A. 7.02 per 100
• B. 70.2 per 100
• C. 0.702 per 100
• D. 702 per 1000

Answer: (B)

Expressing rates per 100 patients translates the proportion into a percentage. The rate is found by (patients with an error / total patients) × 100. A rate of 70.2 per 100 means about 70.2% of patients experienced an error, roughly seven in ten. That direct per-100 expression is the clearest way to report the result when the question asks for per 100 patients. The other numbers either scale the percentage differently (7.02 per 100 is 7.02%, far smaller), or use a different unit (per 1000, which is the same value expressed differently but not per 100), or present an even smaller percentage (0.702 per 100).