Importance of accounting for loss to follow-up when comparing mortality between immigrants and long-term residents: a population-based retrospective cohort.

ABSTRACT:

Objectives

To evaluate the association between immigration status and all-cause mortality in different disease cohorts, and the impact of loss to follow-up on the observed associations.

Design

Population-based retrospective cohort study using linked administrative health data in Ontario, Canada.

Setting

We followed adults with a first-ever diagnosis of ischaemic stroke, cancer or schizophrenia between 2002 and 2013 from index event to death, loss to follow-up, or end of follow-up in 2018.

Primary and secondary outcome measures

Our outcomes of interest were all-cause mortality and loss to follow-up. For each disease cohort, we calculated adjusted HRs of death in immigrants compared with long-term residents, adjusting for demographic characteristics and comorbidi

SUBMITTER: Vyas MV 

PROVIDER: S-EPMC8565574 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature