This is the money shot, copied and pasted from the article, with the key stat in row 2.
But the tails on the data for higher exposures are insane. I think I’ve been imaged every two years on average—seems to be standard of care at USA dentist offices. So between ages 18 and 38, I received ~10 x-ray exposures.
We observed a 13% increase in thyroid cancer risk for every 10 reported dental radiographs (hazard ratio = 1.13, 95% confidence interval: 1.01, 1.26), which was driven by dental x-rays first received before 1970, but there was no evidence that the relationship between dental x-rays and thyroid cancer was associated with childhood or adolescent exposures as would have been anticipated. The relationship between dental x-rays and thyroid cancer risk was surprising because we found no evidence of an association of thyroid cancer with other types of diagnostic x-rays characterized by higher radiation exposure than dental x-rays.
Per my layperson’s understanding, Memon found that for each person with thyroid cancer who had had no dental x-rays, there were between 1.1 and 26.7 people with thyroid cancer who had had ten or more dental x-rays (yes, I know, low confidence interval), and Neta found that a person with ten dental x-rays had a 13% higher risk of getting thyroid cancer as someone without.
Neta cites Memon and claims various methodological advantages over Memon. Maybe they are relevant to your analysis?
This is the money shot, copied and pasted from the article, with the key stat in row 2.
But the tails on the data for higher exposures are insane. I think I’ve been imaged every two years on average—seems to be standard of care at USA dentist offices. So between ages 18 and 38, I received ~10 x-ray exposures.
Google led me to this meta, which led me to this 2013 study, which found:
Per my layperson’s understanding, Memon found that for each person with thyroid cancer who had had no dental x-rays, there were between 1.1 and 26.7 people with thyroid cancer who had had ten or more dental x-rays (yes, I know, low confidence interval), and Neta found that a person with ten dental x-rays had a 13% higher risk of getting thyroid cancer as someone without.
Neta cites Memon and claims various methodological advantages over Memon. Maybe they are relevant to your analysis?