Table 1 Comparison of the CPS II dose-response results of 1995 Cardenas disseration and 1997 Cardenas paper: relative risk (RR & 95% CI) of lung cancer death by ETS exposure (spousal smoking) among female never smokers in CPS II. Definition in 1995 Cardenas dissertation [41]: 'Analyses restricted to nonsmoking spouses married to nonsmoking spouses and those married to cigarette smokers (and not other type of tobacco), with complete smoking data, married once at a time of interview, and with valid data on age at first marriage.' Definition in1997 Cardenas paper [49]: 'The referent group includes never-smoking women married to husbands who did not smoke during the marriage. The exposed categories are split into approximate tertiles, and are restricted to never-smokers married to cigarette smokers with complete smoking data, married once, and with valid information on age at marriage.'

From: Defending legitimate epidemiologic research: combating Lysenko pseudoscience