Table II.

Summary Table of All National Orthopaedic Surgery Residents' Average Performance on the 2021 Orthopaedic Surgery In-Training Examination Per Postgraduate-Year Level and ChatGPT Plus Performance, Ranked by Increasing Performance

Level	Number (n)	Mean Score (/263)	Performance (%)
PGY1	965	132.12	50%
PGY2	1,032	145.44	55.5%
PGY3	1,011	159.29	61%
ChatGPT Plus*	2	123*	61.2%
PGY4	1,015	167.6	64%
PGY5	963	175.02	67%

^*ChatGPT Plus (version 4.0) mean score and performance was calculated by 2 independent reviewers over a total of 201 questions.

PGY = Postgraduate Year.