Continued my work by/with/on analysing

prepositions

Which preposition is correct in the following sentence?

The first paper of my thesis indicated issues in these patients' ongoing care. Therefore, I continued my work by/with/on analysing these patients' rehabilitation.


I continued my work on X implies that X was already the theme and you carried on with it.

Your paragraph suggests that initial research prompted you to study a new aspect of the topic, so I think by would be the best option.

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