Items where Author is "Didelez, Vanessa"

Burgess, Stephen and Granell, Raquel and Palmer, Tom M. and Sterne, Jonathan A. C. and Didelez, Vanessa (2014) Lack of identification in semiparametric instrumental variable models with binary outcomes. American Journal of Epidemiology, 180 (1). pp. 111-119. ISSN 0002-9262

Harbord, Roger M. and Didelez, Vanessa and Palmer, Tom M. and Meng, Sha and Sterne, Jonathan A. C. and Sheehan, Nuala A. (2013) Severity of bias of a simple estimator of the causal odds ratio in Mendelian randomization studies. Statistics in Medicine, 32 (7). pp. 1246-1258. ISSN 0277-6715

Palmer, Tom M. and Ramsahai, Roland R. and Lawlor, Debbie A. and Sheehan, Nuala A. and Didelez, Vanessa (2012) Re: "credible mendelian randomization studies : approaches for evaluating the instrumental variable assumptions". American Journal of Epidemiology, 176 (5). 457-458; author reply 458. ISSN 0002-9262

Palmer, Tom M. and Sterne, Jonathan A. C. and Harbord, Roger M. and Lawlor, Debbie A. and Sheehan, Nuala A. and Meng, Sha and Granell, Raquel and Smith, George Davey and Didelez, Vanessa (2011) Instrumental variable estimation of causal risk ratios and causal odds ratios in Mendelian randomization analyses. American Journal of Epidemiology, 173 (12). pp. 1392-1403. ISSN 0002-9262

Palmer, Thomas Michael and Ramsahai, Roland and Didelez, Vanessa and Sheehan, Nuala A. (2011) Nonparametric bounds for the causal effect in a binary instrumental variable model. Stata Journal, 11 (3). pp. 345-367. ISSN 1536-867X