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Table 2 Students’ ability to correctly answer questions about the structure contained within the assessment puzzle phantom during Phase 1, 3 months after the training course (Delayed Posttest). Fifteen medical students participated in the delayed posttest; their specific performance on the immediate posttest is included (Immediate Posttest)

From: Use of gelatin puzzle phantoms to teach medical students isolated ultrasound transducer movements and fundamental concepts

Psychomotor Skill

Immediate Posttest n(%)

Delayed Posttest n(%)

p

Draw domino face (tilting)

3 (20%)

9 (60%)

0.028

Determine direction domino facing (tilting)

5 (33%)

5 (33%)

0.105

Identify shape of item on set of steps (sliding)

7 (47%)

8 (53%)

0.584

Determine depth of superficial surface of item on steps (depth)

7 (47%)

6 (40%)

0.122

Determine orientation of tubular structure (rotating)

6 (40%)

7 (47%)

0.236