{"id":"W2111714917","doi":"10.1093/aje/kwm324","title":"Immortal Time Bias in Pharmacoepidemiology","year":2007,"lang":"en","type":"review","venue":"American Journal of Epidemiology","topic":"Liver Disease Diagnosis and Treatment","field":"Medicine","cited_by":1669,"is_retracted":false,"has_abstract":true,"ca_institutions":"McGill University","funders":"Canadian Institutes of Health Research","keywords":"Medicine; Hazard ratio; Observational study; Cohort; Context (archaeology); Epidemiology; Cohort study; Proportional hazards model; Pharmacoepidemiology; Survival analysis; Statistics; Internal medicine; Confidence interval; Pharmacology; Mathematics","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.2185690324512901,"score_gpt":0.4914055242019977,"score_spread":0.2728364917507076,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}