Methods to assess intended effects of drug treatment in observational studies are reviewed

OH Klungel, EP Martens, BM Psaty, DE Grobbee… - Journal of clinical …, 2004 - Elsevier
BACKGROUND AND OBJECTIVE: To review methods that seek to adjust for confounding in
observational studies when assessing intended drug effects. METHODS: We reviewed the …

Reporting of covariate selection and balance assessment in propensity score analysis is suboptimal: a systematic review

…, AW Hoes, KCB Roes, A de Boer, OH Klungel - Journal of clinical …, 2015 - Elsevier
Objectives To assess the current practice of propensity score (PS) analysis in the medical
literature, particularly the assessment and reporting of balance on confounders. Study Design …

Effectiveness of interventions by community pharmacists to improve patient adherence to chronic medication: a systematic review

BLG Van Wijk, OH Klungel… - Annals of …, 2005 - journals.sagepub.com
… Ocho estudios demostraron una mejoría significativa en adherencia en uno o más puntos
… Las estrategias de consejería, seguimiento y educación durante citas semanales o

[PDF][PDF] Association between alcohol and cardiovascular disease: Mendelian randomisation analysis based on individual participant data

…, MJ Cramer, P Van der Harst, OH Klungel… - Bmj, 2014 - bmj.com
… Harst cardiologist43 46 47, Olaf H Klungel associate professor of pharmacoepidemiologic
… 34 Husemoen LL, Jorgensen T, Borch-Johnsen K, Hansen T, Pedersen O, Linneberg A. The …

[HTML][HTML] Plasma HDL cholesterol and risk of myocardial infarction: a mendelian randomisation study

…, T Zeller, P Wild, PIW De Bakker, OH Klungel… - The Lancet, 2012 - thelancet.com
Background High plasma HDL cholesterol is associated with reduced risk of myocardial
infarction, but whether this association is causal is unclear. Exploiting the fact that genotypes are …

[HTML][HTML] HMG-coenzyme A reductase inhibition, type 2 diabetes, and bodyweight: evidence from genetic analysis and randomised trials

…, W Spiering, AH Maitland-van der Zee, OH Klungel… - The Lancet, 2015 - thelancet.com
Background Statins increase the risk of new-onset type 2 diabetes mellitus. We aimed to
assess whether this increase in risk is a consequence of inhibition of 3-hydroxy-3-methylglutaryl…

[HTML][HTML] Estimating measures of interaction on an additive scale for preventive exposures

…, RHH Groenwold, OH Klungel… - European journal of …, 2011 - Springer
Measures of interaction on an additive scale (relative excess risk due to interaction [RERI],
attributable proportion [AP], synergy index [S]), were developed for risk factors rather than …

Instrumental variables: application and limitations

…, WR Pestman, A de Boer, SV Belitser, OH Klungel - …, 2006 - journals.lww.com
… The vector Z can now be decomposed as Z = Z′ + O where Z′ is in the plane spanned by
E and X and where O is perpendicular to this plane. The vector O can be referred to as noise …

[PDF][PDF] Large-scale gene-centric meta-analysis across 39 studies identifies type 2 diabetes loci

…, T Illig, GP Jarvik, JA Johnson, OH Klungel… - The American Journal of …, 2012 - cell.com
To identify genetic factors contributing to type 2 diabetes (T2D), we performed large-scale
meta-analyses by using a custom ∼50,000 SNP genotyping array (the ITMAT-Broad-CARe …

Pharmacogenetics: from bench to byte

…, TCG Egberts, OH Klungel… - Clinical …, 2008 - Wiley Online Library
Despite initial enthusiasm, 1 , 2 , 3 the use of pharmacogenetics has remained limited to
investigation in only a few clinical fields such as oncology and psychiatry. , 5 , 6 , 7 , 8 The main …