Q: Would this be considered a duplicate publication?

Detailed Question -

I published a paper of a retrospective analysis of 14 novel surgical procedures. However, it is not compared with the conventional method. After that, 2 cases were added and currently n = 16; there was a significant difference at n = 16. I am thinking of submitting a new paper as a separate paper compared to the conventional method (laparoscope vs. laparotomy). Is it considered a duplicate paper? If it is considered a duplicate, what should I do to submit the paper ethically?

1 Answer to this question
Answer:

Thank you for your question. Duplicate publication occurs when authors reuse substantial portions of their own published work without providing appropriate references. This varies from publishing an identical paper in multiple journals to only adding a small amount of new data to a previously published paper.

For more information, you can consider the following resources:

Hope this helps. We wish you all the very best for your study.

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