Effect of covid-19 vaccination on long covid: systematic review

Oyungerel Byambasuren, Paulina Stehlik, Justin Clark, +2

BMJ Medicine

Conducting umbrella reviews

Lazaros Belbasis, Vanesa Bellou, John P. A. Ioannidis

BMJ Medicine

ReliabilityCustomer ReviewEngineeringWorking ExampleOrganizational Communication +10

Measuring multimorbidity in research: Delphi consensus study

Iris Ho, Amaya Azcoaga-Lorenzo, Ashley Akbari, +9

BMJ Medicine

Efficacy of first dose of covid-19 vaccine versus no vaccination on symptoms of patients with long covid: target trial emulation based on ComPaRe e-cohort

Viet-Thi Tran, Élodie Perrodeau, Júlia Schirmer Saldanha, +2

BMJ Medicine

Defining representativeness of study samples in medical and population health research

Jacqueline E. Rudolph, Yongqi Zhong, Priya Duggal, +2

BMJ Medicine

Patient SelectionPopulation Health ResearchEpidemiologic ResearchPopulation Health SciencesStudy Samples +22

Severity of maternal infection and perinatal outcomes during periods of SARS-CoV-2 wildtype, alpha, and delta variant dominance in the UK: prospective cohort study

Nicola Vousden, Rema Ramakrishnan, Kathryn Bunch, +7

BMJ Medicine

Core outcome sets in medical research

Jamie J Kirkham, Paula Williamson

BMJ Medicine

Core Outcome SetsKey MessagesCore OutcomeClinical Decision-makingPatient Selection +7

Performance of polygenic risk scores in screening, prediction, and risk stratification: secondary analysis of data in the Polygenic Score Catalog

Aroon D. Hingorani, Jasmine Gratton, Chris Finan, +8

BMJ Medicine

Association between menstrual cycle length and covid-19 vaccination: global, retrospective cohort study of prospectively collected data

Alison Edelman, Emily R. Boniface, Victoria Male, +7

BMJ Medicine

Quantifying the impact of unmeasured confounding in observational studies with the E value

Tobias Gaster, Christine Marie Eggertsen, Henrik Støvring, +2

BMJ Medicine

Unmeasured ConfoundingTreatment EffectPharmacotherapyCausal InferenceNegative Result +18