Earlier quoted context omitted.
No, cancer does not have standardized treatments. The remission rates vary greatly depending on the hospital and even on the doctor.
Huh...? There are standard treatment protocols.
There was a lot of variance in how doctors and nurses treated the side effects, how they spoke to the patient, what other resources they provided, the quality of bedside manner, their attentiveness to lab results and patient health over time, whether they consistently washed their hands, etc.
People don't really die "of cancer" they die of things like blood loss, toxic build up from renal failure, blood clots, or infections acquired in the hospital that attack a weakened immune system, to name a few.