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Re: lightrock post# 18160

Wednesday, 02/06/2019 8:15:38 PM

Wednesday, February 06, 2019 8:15:38 PM

Post# of 43784
Hi

See a quick and dirty test on your column L

https://docs.google.com/spreadsheets/d/1oe89En9CYKDX8z3kaExsIbSsAgNvZ5nL9k98-1ZTy3I/edit?usp=sharing

XL computes the regression based on 3 points (from by UK cancer data) : Initially b was 78,573 but I changed it to 78 to match your 55% at Y5 in order to measure the impact on changing your straight line survival curve by a log curve. See how the log curve matches accurately the real OS figures at Y1,Y5,Y10

Initial regression a= -14.32; b= 78,573

Year UK H&NCancer DB Survival% / REG LOG%
1 78.4 / 78.6
2 68.6
3 62.8
4 58.7
5 56.1 / 55.5
6 52.9
7 50.7
8 48.8
9 47.1
10 45.2 / 45.6
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