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The impact of lookback windows on the prevalence and incidence of chronic diseases among people living with HIV: an exploration in administrative health data in Canada Nanditha, Ni Gusti Ayu; Dong, Xinzhe; McLinden, Taylor; Sereda, Paul; Hogg, Robert S.; Montaner, Julio; Lima, Viviane Dias

Abstract

Background We described the impact of different lengths of lookback window (LW), a retrospective time period to observe diagnoses in administrative data, on the prevalence and incidence of eight chronic diseases. Methods Our study populations included people living with HIV (N = 5151) and 1:5 age-sex-matched HIV-negative individuals (N = 25,755) in British Columbia, Canada, with complete follow-up between 1996 and 2012. We measured period prevalence and incidence of diseases in 2012 using LWs ranging from 1 to 16 years. Cases were deemed prevalent if identified in 2012 or within a defined LW, and incident if newly identified in 2012 with no previous cases detected within a defined LW. Chronic disease cases were ascertained using published case-finding algorithms applied to population-based provincial administrative health datasets. Results Overall, using cases identified by the full 16-year LW as the reference, LWs ≥8 years and ≥ 4 years reduced the proportion of misclassified prevalent and incidence cases of most diseases to

Item Metadata

Title
The impact of lookback windows on the prevalence and incidence of chronic diseases among people living with HIV: an exploration in administrative health data in Canada
Creator
Nanditha, Ni Gusti Ayu; Dong, Xinzhe; McLinden, Taylor; Sereda, Paul; Hogg, Robert S.; Montaner, Julio; Lima, Viviane Dias
Contributor
British Columbia Centre for Excellence in HIV/AIDS; Arthritis Research Canada
Publisher
BioMed Central
Date Issued
2022-01-06
Description
Background We described the impact of different lengths of lookback window (LW), a retrospective time period to observe diagnoses in administrative data, on the prevalence and incidence of eight chronic diseases. Methods Our study populations included people living with HIV (N = 5151) and 1:5 age-sex-matched HIV-negative individuals (N = 25,755) in British Columbia, Canada, with complete follow-up between 1996 and 2012. We measured period prevalence and incidence of diseases in 2012 using LWs ranging from 1 to 16 years. Cases were deemed prevalent if identified in 2012 or within a defined LW, and incident if newly identified in 2012 with no previous cases detected within a defined LW. Chronic disease cases were ascertained using published case-finding algorithms applied to population-based provincial administrative health datasets. Results Overall, using cases identified by the full 16-year LW as the reference, LWs ≥8 years and ≥ 4 years reduced the proportion of misclassified prevalent and incidence cases of most diseases to
Subject
Administrative health data; Comorbidities; HIV; Incidence; Lookback window; Prevalence; Bias
Genre
Article
Type
Text
Language
eng
Date Available
2022-01-26
Provider
Vancouver : University of British Columbia Library
Rights
Attribution 4.0 International (CC BY 4.0)
DOI
10.14288/1.0406360
URI
http://hdl.handle.net/2429/80736
Affiliation
Medicine, Faculty of; Other UBC; Medicine, Department of; Population and Public Health (SPPH), School of
Citation
BMC Medical Research Methodology. 2022 Jan 06;22(1):1
Publisher DOI
10.1186/s12874-021-01448-x
Peer Review Status
Reviewed
Scholarly Level
Faculty; Researcher; Other
Copyright Holder
The Author(s)
Rights URI
http://creativecommons.org/licenses/by/4.0/
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Attribution 4.0 International (CC BY 4.0)