I'd like to pick up your minds about the result of this paper

Do you think that they have used the best type of analysis or it's too much?

They used COX, linear, multiple imputations, CACE, and Kaplan-Meier curve

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    $\begingroup$ Please edit your question to say more about your specific concerns, in particular what you mean by "or it's too much." Each of those analysis methods has appropriate uses in general, and a quick look at the paper doesn't indicate that any were used inappropriately. If there are particular aspects of the paper and the analyses that trouble you, please specify what they are. On this site it's best to provide such information by editing the question, as comments are easy to overlook and can get deleted. $\endgroup$
    – EdM
    Nov 24 at 14:00