How? Maybe you went into remission because you took an aspirin every morning. Or maybe it's because drank a cup of coffee every day, or ate lots of greens, or spent 10 minutes in the sun every day, etc. Your body is complicated and more than likely lots of factors helped.

I don't think so - a cancer patient is probably taking/doing so many things for treatment that they wouldn't think to attribute it to cancer.

It could explain people eating healthy to get rid of cancer instead of chemo or traditional treatments - maybe they take aspirin too.

I know I wouldn't give aspirin a second thought if I had cancer.

I doubt patients would consider the correlation since in their mind the effectiveness measure of aspirin specifically is pain relief rather than remission.

Plus lots of 'noise' from other treatments.

Aspirin (previously erroneously typed cancer, hat tip to 'tossaway1 for the correction!) has previously been associated with reduced colorectal cancer death[1]. The cancer/aspirin link has come up a fair amount over the past few decades.

1 = https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3354696/