Survival Analysis: An observational study is conducted to compare the survival experience of individuals with brain cancer following treatment. Participants undergo treatment and are followed until the time of recurrence, until they are lost to follow-up or up to 40 weeks, whichever comes first. The following table details the experiences of participants undergoing radiotherapy alone or radiotherapy and surgery. The data below are week to recurrence or week of last contact. Using the Kaplan-Meier approach, what is the Survival Probability at the end of 8 weeks for radiotherapy alone? (Hint: set up a table for radiotherapy including columns for time (week), Nt, Dt, Ct, and St+1) Radiotherapy Alone Surgery/Radiotherapy Weeks to recurrence Week of Last Contact (no recurrence) Weeks to recurrence Week of Last Contact (no recurrence) 2 3 2 10 2 4 6 14 2 5 10 21 5 6 23 7 29 8 32 34 by the way the survival/radiotherapy needs to be above the weeks of recurrence. Im not sure why it has it in the middle of the two.
Survival Analysis: An observational study is conducted to compare the survival experience of individuals with brain cancer following treatment. Participants undergo treatment and are followed until the time of recurrence, until they are lost to follow-up or up to 40 weeks, whichever comes first. The following table details the experiences of participants undergoing radiotherapy alone or radiotherapy and surgery. The data below are week to recurrence or week of last contact. Using the Kaplan-Meier approach, what is the Survival
|
Radiotherapy Alone |
|
Surgery/Radiotherapy |
||
|
Weeks to recurrence |
Week of Last Contact (no recurrence) |
|
Weeks to recurrence |
Week of Last Contact (no recurrence) |
|
2 |
3 |
|
2 |
10 |
|
2 |
4 |
|
6 |
14 |
|
2 |
5 |
|
10 |
21 |
|
5 |
6 |
|
|
23 |
|
|
7 |
|
|
29 |
|
|
8 |
|
|
32 |
|
|
|
|
|
34 |
by the way the survival/radiotherapy needs to be above the weeks of recurrence. Im not sure why it has it in the middle of the two.
AI-generated content may present inaccurate or offensive content that does not represent bartleby’s views.
Unlock instant AI solutions
Tap the button
to generate a solution
