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What is the earliest paper that proposed the stratified version of the log-rank test?

Unfortunately, finding citations/references in textbooks for established statistics procedures is difficult.

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As mentioned by Jun Shao in his paper, it was by R Peto et al. in their paper Design and analysis of randomized clinical trials requiring prolonged observation of each patient. I. Introduction and design, the description being found in PubMed site.

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In fact, Peto & Peto in an earlier paper Asymptotically Efficient Rank Invariant Test Procedures, used the term log-rank for their invariant rank based statistic. Later, they generalized for "multi-group experiments".

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  • $\begingroup$ I have already reviewed this reference, and I do not see any section discussing the development of the statistic in question. $\endgroup$ Commented Apr 11 at 4:53
  • $\begingroup$ Check their earlier paper linked above. $\endgroup$ Commented Apr 11 at 10:23
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    $\begingroup$ No, it's much earlier by Nathan-Mantel under the Mantel-Haenszel framework. $\endgroup$ Commented Apr 11 at 12:14
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    $\begingroup$ Yes, @FrankHarrell, you are right in that Peto wasn't the first in developing the statistic based on chi square (even Peto cited their 1959 paper) . But it was Peto's 1972 paper, which according to Kalbfleisch and Prentice, was the first to "coin the term log-rank". $\endgroup$ Commented Apr 11 at 12:27

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