Question: 4. The calculations for the MantelCox test are: a) Based upon comparing the observed number of events with the expected number of events at each

4. The calculations for the Mantel–Cox test are:

a) Based upon comparing the observed number of events with the expected number of events at each time-point

b) Based only on the numbers of participants who are lost to the study or who do not experience the event

c) Based upon the mean number of events for each condition

d) None of the above

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