Nope. Despite news reports about this new study in The Lancet, there was no statistically significant association between cancer incidence and (hyper-studied) World Trade Center firefighters. Ten years after the 9-11 horror, it is time to move on from the 9-11 junk science.
I would like to stress though, as wonderful as it is to see a growing number of survivors, it is important that people do what they can to prevent cancer in the first place.
The study makes much ado over what they call ‘Standardized Incidence Ratios’, a ratio of incidence rates in exposed vs non-exposed populations, a measure that bears no statistical significane at all.
These cases of cancer (in tightly defined populations) are rare-event phenomena that follow a chi-square distribution rather than a normal distribution. But there is nary a mention of a single chi-square value.
The paper is statistically incompetent.