I am very grateful for Klaus K for posting this on my blog. This is the whole idea of me starting it as I want an evidence based discussion. Thanks to Rollo for stimulating debate too. It seems the real OR for the WHO/Boffetta paper is 1.02. Second hand smoke is harmless. Klaus wrote.
“Some people discussed the IARC 1998 study exactly 1 year ago on Chris Snowdon’s blog, among them Mr Tommasi:
IARC 1998 is without any doubt a no-risk study, which becomes very clear when you examine the study’s Technical report with the raw figures – page 220 for workplace SHS:
Controlling for educational level and type of residence more than halved the SHS-workplace risk from unadjusted Odds Ratio 1.17 in the article to OR 1.08 (page 220, row 1, column 3). Furthermore: Eliminating 7 portuguese cases (out of 650 cases in total) with incomplete data reduces the ratio to OR 1.02 – (page 220, row 3, column 3).
More in the comments on Snowdon’s blog:”