Study Population

Exposed Cases

Estimated RR (95% CI)

Hardell 1981

153 colon cancer cases among male residents of Umea, Sweden Asbestos, any


1.9 (1.0-3.6)

Hillerdal 1980

Gastrointestinal carcinoma cases among male residents of Uppsala county, Sweden (exposure = pleural plaques)




108 colon


1.67 (0.34-4.87)a


101 rectal


1.76 (0.36-5.16)a

NOTES: CI = Confidence interval; na = not available; RR = relative risk. Data points included in meta-analyses are bolded.

* Full citations can be found in the reference list for Chapter 6.

aOR and 95% CI calculated with standard methods from observed and expected numbers presented in original paper.

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