Fig. 3From: Effectiveness of point of care ultrasound (POCUS) simulation course and skills retention for Japanese nurse practitionersBox plot of the number of ultrasound examinations performed for 3 months before and after the course. Category 1: 0 cases, category 2: 1–9 cases, category 3: 10–29 cases, category 4: 30–49 cases, category 5: 50–99 cases, category 6: ≥ 100 casesBack to article page