From Figure 11.9 the P‐value from the Logrank test is P = 0.003.

Which of the following statements are true?

A. This result is not statistically significant.

B. The probability of getting the value of the Logrank test or more extreme by chance if there had been no difference in the population survival curves between the three groups is 0.850.

C. The probability of getting this difference or more extreme is 0.003.

D. There is sufficient evidence to reject the null hypothesis.

E. The results are unlikely when the null hypothesis is true.

Figure 11.9

Transcribed Image Text:

Overall survival 1 0.75 0.50 0.25 0 Number at risk 0 Log-rank test = 11.40 on X df, P = 0.003 100 200 300 400 Time from gastrostomy insertion (days) PEG 159 122 RIG 117 94 PIG 43 32 - PEG 92 64 74 53 19 8 RIG PIG 000