Problem of immortal time bias in cohort studies: example using statins for preventing progression of diabetes

LE Lévesque, JA Hanley, A Kezouh, S Suissa - Bmj, 2010 - bmj.com
Linda E Lévesque, assistant professor of epidemiology1… Correspondence to: L
Lévesque linda.levesque{at}queensu.ca … Articles by Linda E Lévesque

Thiazolidinediones and cardiovascular outcomes in older patients with diabetes

LL Lipscombe, T Gomes, LE Lévesque, JE Hux… - Jama, 2007 - jamanetwork.com
ContextThiazolidinediones (TZDs), used to treat type 2 diabetes, are associated with an
excess risk of congestive heart failure and possibly acute myocardial infarction. However, the …

[HTML][HTML] Interrupted time series analysis in drug utilization research is increasing: systematic review and recommendations

…, AM Burden, M Mamdani, LE Lévesque… - Journal of clinical …, 2015 - Elsevier
Objectives To describe the use and reporting of interrupted time series methods in drug
utilization research. Study Design and Setting We completed a systematic search of MEDLINE, …

Association of selective and conventional nonsteroidal antiinflammatory drugs with acute renal failure: a population-based, nested case-control analysis

V Schneider, LE Lévesque, B Zhang… - American Journal of …, 2006 - academic.oup.com
Conventional nonsteroidal antiinflammatory drugs (NSAIDs) are associated with acute renal
failure, but cyclooxygenase-2 inhibitors have not been comparatively evaluated. The …

The risk for myocardial infarction with cyclooxygenase-2 inhibitors: a population study of elderly adults

LE Lévesque, JM Brophy, B Zhang - Annals of Internal Medicine, 2005 - acpjournals.org
Background: Cyclooxygenase-2 (COX-2) selective inhibitors have been marketed since 1999
as safer alternatives to nonsteroidal anti-inflammatory drugs (NSAIDs). Debate about their …

Effect of human papillomavirus (HPV) vaccination on clinical indicators of sexual behaviour among adolescent girls: the Ontario Grade 8 HPV Vaccine Cohort Study

LM Smith, JS Kaufman, EC Strumpf, LE Lévesque - Cmaj, 2015 - Can Med Assoc
Background: Suboptimal human papillomavirus (HPV) vaccine coverage in some jurisdictions
is partly attributed to fears that vaccination may increase risky sexual behaviour. We …

Reduction of morbidity and mortality by statins, angiotensin-converting enzyme inhibitors, and angiotensin receptor blockers in patients with chronic obstructive …

GBJ Mancini, M Etminan, B Zhang, LE Levesque… - Journal of the American …, 2006 - jacc.org
Objectives : The purpose of this study was to determine if statins (hydroxymethylglutaryl
CoA reductase inhibitors [HMG-CoA]), angiotensin-converting enzyme (ACE) inhibitors, and …

The early benefits of human papillomavirus vaccination on cervical dysplasia and anogenital warts

…, JS Kaufman, A Lofters, M Schwandt, LE Lévesque - …, 2015 - publications.aap.org
BACKGROUND: Despite widespread promotion of quadrivalent human papillomavirus (qHPV)
vaccination for young girls, there is limited information on the vaccine’s real-world …

Occurrence of pregnancy and pregnancy outcomes during isotretinoin therapy

…, G Carney, S Bugden, G Teare, LE Lévesque… - Cmaj, 2016 - Can Med Assoc
Background: Isotretinoin, a teratogen, is widely used to treat cystic acne. Although the risks of
pregnancy during isotretinoin therapy are well recognized, there are doubts about the level …

Effectiveness of oral bisphosphonates in reducing fracture risk among oral glucocorticoid users: three matched cohort analyses

MA Amiche, LE Lévesque, T Gomes… - Journal of Bone and …, 2018 - academic.oup.com
The benefit of oral bisphosphonates in reducing fracture risk in glucocorticoid‐induced
osteoporosis is controversial. We aimed to estimate the effectiveness of oral bisphosphonates in …