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Multiple-Imputation Variance Estimation in Studies With Missing or Misclassified Inclusion Criteria

By anna [dot] axmon [at] med [dot] lu [dot] se (Anna Axmon) - published 1 June 2021 Photo: Pixabay / Gerd Altmann In observational studies using routinely collected data, a variable with a high level of missingness or misclassification may determine whether an observation is included in the analysis. In settings where inclusion criteria are assessed after imputation, the popular multiple-imputatio

https://www.lupop.lu.se/article/multiple-imputation-variance-estimation-studies-missing-or-misclassified-inclusion-criteria - 2025-04-27

On the Causal Interpretation of Rate-Change Methods: The Prior Event Rate Ratio and Rate Difference

By anna [dot] axmon [at] med [dot] lu [dot] se (Anna Axmon) - published 2 June 2021 Photo: Pixabay / Gerd Altmann A growing number of studies use data before and after treatment initiation in groups exposed to different treatment strategies to estimate “causal effects” using a ratio measure called the prior event rate ratio (PERR). Here, we offer a causal interpretation for PERR and its additive s

https://www.lupop.lu.se/article/causal-interpretation-rate-change-methods-prior-event-rate-ratio-and-rate-difference - 2025-04-27

What Now? Epidemiology in the Wake of a Pandemic

By anna [dot] axmon [at] med [dot] lu [dot] se (Anna Axmon) - published 2 June 2021 Image from pixabay / pearson0612 The coronavirus disease 2019 (COVID-19) pandemic and the coming transition to a postpandemic world where COVID-19 will likely remain as an endemic disease present a host of challenges and opportunities in epidemiologic research. Read the paper at https://academic.oup.com/aje/article

https://www.lupop.lu.se/article/what-now-epidemiology-wake-pandemic - 2025-04-27

Reducing Bias Due to Exposure Measurement Error Using Disease Risk Scores

By anna [dot] axmon [at] med [dot] lu [dot] se (Anna Axmon) - published 3 June 2021 Suppose that an investigator wants to estimate an association between a continuous exposure variable and an outcome, adjusting for a set of confounders. If the exposure variable suffers classical measurement error, in which the measured exposures are distributed with independent error around the true exposure, then

https://www.lupop.lu.se/article/reducing-bias-due-exposure-measurement-error-using-disease-risk-scores - 2025-04-27

Simulation as a Tool for Teaching and Learning Epidemiologic Methods

By anna [dot] axmon [at] med [dot] lu [dot] se (Anna Axmon) - published 4 June 2021 Photo: Kennet Ruona In aspiring to be discerning epidemiologists, we must learn to think critically about the fundamental concepts in our field and be able to understand and apply many of the novel methods being developed today. We must also find effective ways to teach both basic and advanced topics in epidemiolog

https://www.lupop.lu.se/article/simulation-tool-teaching-and-learning-epidemiologic-methods - 2025-04-27

Factorial Mendelian randomization: using genetic variants to assess interactions

By anna [dot] axmon [at] med [dot] lu [dot] se (Anna Axmon) - published 5 June 2021 Photo: Pixabay / Arek Socha Factorial Mendelian randomization is the use of genetic variants to answer questions about interactions. Although the approach has been used in applied investigations, little methodological advice is available on how to design or perform a factorial Mendelian randomization analysis. Read

https://www.lupop.lu.se/article/factorial-mendelian-randomization-using-genetic-variants-assess-interactions - 2025-04-27

Bias factor, maximum bias and the E-value: insight and extended applications

By anna [dot] axmon [at] med [dot] lu [dot] se (Anna Axmon) - published 6 June 2021 Unmeasured confounding can bias the relationship between exposure and outcome. Sensitivity analyses generate bias-adjusted measures but these are not much used; this may change with the availability of the E-value (for evidence for causality in observational studies), appealing for its ease of calculation. Read the

https://www.lupop.lu.se/article/bias-factor-maximum-bias-and-e-value-insight-and-extended-applications - 2025-04-27

Reference-adjusted and standardized all-cause and crude probabilities as an alternative to net survival in population-based cancer studies

By anna [dot] axmon [at] med [dot] lu [dot] se (Anna Axmon) - published 7 June 2021 Photo: Pixabay / Colin Behrens We illustrate the method and some potential choices using data from England for men diagnosed with melanoma. Various marginal measures are presented and compared. Read the paper at https://academic.oup.com/ije/article/49/5/1614/5896134

https://www.lupop.lu.se/article/reference-adjusted-and-standardized-all-cause-and-crude-probabilities-alternative-net-survival - 2025-04-27

PhD position in Economic History: Neighborhood effects over the life course

Published 27 May 2021 Fotograf: Håkan Röjder The PhD position is linked to the research project The long reach of the neighborhood: Health, education and earnings in Landskrona, Sweden, 1904-2015, funded by Handelsbankens forskningsstiftelser. The PhD student will work in this project in collaboration with other project members and will be affiliated with the Centre for Economic Demography at LUSE

https://www.lupop.lu.se/article/phd-position-economic-history-neighborhood-effects-over-life-course - 2025-04-27

Reflection on modern methods: planned missing data designs for epidemiological research

By anna [dot] axmon [at] med [dot] lu [dot] se (Anna Axmon) - published 16 June 2021 Photo: Pixabay / Gerd Altmann This paper describes the multiform, wave-missing and two-method designs, including their benefits, their impact on bias and power, and other factors that must be taken into consideration when implementing them in an epidemiological study design. Read the paper at https://academic.oup.

https://www.lupop.lu.se/article/reflection-modern-methods-planned-missing-data-designs-epidemiological-research - 2025-04-27

Statusuppdatering kvartalsbokslutet

Publicerad 12 april 2016 Rapporten Avstämning prel per inkl restvärdeDet har varit en del fel i denna rapport. Nu återstår det ett fel som innebär att vissa resultatavräknade projekt visas som periodiserade i denna rapport. I bifogat dokument får du en instruktion för hur du ändå kan räkna fram ditt preliminära resultat.Statusrapport kvartalsbokslut, rapport Avstämning prel per inkl restvärde, 201

https://www.ekonomiwebben.lu.se/artikel/statusuppdatering-kvartalsbokslutet - 2025-04-27

Status kvartalsbokslutet 13 april

Publicerad 13 april 2016 Rapport Avstämning prel per inkl restvärdeFelet i rapporten som vi meddelade om igår kvarstår. Rapporten visar rätt resultat om du följer gårdagens instruktion.Statusrapport kvartalsbokslut, rapport Avstämning prel per inkl restvärde, 2016-04-12 (PDF 523 kB, nytt fönster)Idag har följande korrigerats:Rapporten har nu bokföringsmässiga tecken. Detta har även lagts till i al

https://www.ekonomiwebben.lu.se/artikel/status-kvartalsbokslutet-13-april - 2025-04-27

Rapport Avstämning prel per inkl restvärde

Publicerad 14 april 2016 Av tekniska skäl har vi i avstämningsrapporten blivit tvungna att dela upp aktiviteterna i två flikar:Avstämning prel per inkl restvärdeAvstämning prel per 99-aktiviteterGör din rapportbeställning på t ex Kostnadsställe i båda flikarna, och välj därefter ikonen Exportera alla flikar till Excel.Nu kan du lägga ihop flikarna till en avstämningsrapport.

https://www.ekonomiwebben.lu.se/artikel/rapport-avstamning-prel-inkl-restvarde - 2025-04-27

Rapport Avstämning prel per inkl restvärde

Publicerad 15 april 2016 Om du tar ut rapporten på INST-kod eller FAK-kod får du med samtliga aktiviteter i flik 1 - Avstämning prel per inkl restvärde. Om du tar ut rapporten på KST-kod måste du komplettera med flik 2 - Avstämning prel per 99-akt enligt tidigare instruktion.Tidigare problem med att aktiviteter som är markerade med R felaktigt visas med periodiseringsförslag i rapporten kvarstår.

https://www.ekonomiwebben.lu.se/artikel/rapport-avstamning-prel-inkl-restvarde-0 - 2025-04-27

Tidplan och inkomstperiodiseringar

Publicerad 20 april 2016 Tidplan och checklistaNu är tidplan och checklista uppdaterad till och med 10 juni publicerad på Ekonomiwebben.InkomstperiodiseringarFortsatt arbete pågår med inkomstperiodiseringarna. Vi återkommer med besked så snart arbetet är färdigt. Avvakta under tiden med att ta resultatrapporter. Vi har fått in bra underlag för att komma vidare i arbetet.

https://www.ekonomiwebben.lu.se/artikel/tidplan-och-inkomstperiodiseringar - 2025-04-27