Coding efficient using multiple conditions with random number generation

[pau13rown]

i deleted my comment when i realised you were restricting the random number (and thus you wouldn't get negative survival as i suggested). Your new approach sounds ideal ie informed as much as possible. I think in the industry it's not uncommon to replace missing days with 15, but that's when there's a decade between diagnosis and death. With shorter survival, as you say, the impact of how missings are handled is more apparent

[Cruise]

your conceptually wired comments are very interesting to me