Analysis of reasons for loss to follow up in a prospective study in Chandigarh, India and impact from telecom changes

Abstract Objective Mobile phones are used in research studies, to enroll and follow-up participants, collect data, and implement mHealth initiatives. We conducted a longitudinal study in a birth cohort, where infants were required to make four scheduled visits by 12 months of age. Families of those...

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Autores principales:	Joseph L. Mathew, Pooja N. Patel, Abram L. Wagner, Vanita Suri, Bhavneet Bharti, Bradley F. Carlson, Matthew L. Boulton
Formato:	article
Lenguaje:	EN
Publicado:	BMC 2021
Materias:	Loss to follow-up mHealth Telecommunications Medicine R Biology (General) QH301-705.5 Science (General) Q1-390
Acceso en línea:	https://doaj.org/article/eb1290009b054118bc47af409662e86b
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spelling	oai:doaj.org-article:eb1290009b054118bc47af409662e86b2021-11-21T12:28:03ZAnalysis of reasons for loss to follow up in a prospective study in Chandigarh, India and impact from telecom changes10.1186/s13104-021-05837-91756-0500https://doaj.org/article/eb1290009b054118bc47af409662e86b2021-11-01T00:00:00Zhttps://doi.org/10.1186/s13104-021-05837-9https://doaj.org/toc/1756-0500Abstract Objective Mobile phones are used in research studies, to enroll and follow-up participants, collect data, and implement mHealth initiatives. We conducted a longitudinal study in a birth cohort, where infants were required to make four scheduled visits by 12 months of age. Families of those failing to attend scheduled follow-up visits, were contacted telephonically to ascertain the reasons, which were categorized as: not interested to continue participating, migrated, phone disconnected due to telecom change, or other reason. Results A total of 413 mother-infant dyads were enrolled. The overall attrition was 56%, with majority occurring at the first follow-up visit. This temporally coincided with a telecom service provider announcing strong incentives to switch providers. Attrition monotonically decreased at subsequent visits. The reasons were: moved away (13%), no longer interested (8%), phone disconnected (7%), and multiple other reasons (28%), the majority of whom had unreachable phones. Those who remained in the study and those lost to follow-up were similar on most demographic variables. Among common reasons for attrition in cohort studies, we experienced a new dimension introduced by telecom changes. These findings underscore the need to consider unexpected reasons for attrition in longitudinal studies, and design more robust methods to follow-up participants.Joseph L. MathewPooja N. PatelAbram L. WagnerVanita SuriBhavneet BhartiBradley F. CarlsonMatthew L. BoultonBMCarticleLoss to follow-upmHealthTelecommunicationsMedicineRBiology (General)QH301-705.5Science (General)Q1-390ENBMC Research Notes, Vol 14, Iss 1, Pp 1-6 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Loss to follow-up mHealth Telecommunications Medicine R Biology (General) QH301-705.5 Science (General) Q1-390
spellingShingle	Loss to follow-up mHealth Telecommunications Medicine R Biology (General) QH301-705.5 Science (General) Q1-390 Joseph L. Mathew Pooja N. Patel Abram L. Wagner Vanita Suri Bhavneet Bharti Bradley F. Carlson Matthew L. Boulton Analysis of reasons for loss to follow up in a prospective study in Chandigarh, India and impact from telecom changes
description	Abstract Objective Mobile phones are used in research studies, to enroll and follow-up participants, collect data, and implement mHealth initiatives. We conducted a longitudinal study in a birth cohort, where infants were required to make four scheduled visits by 12 months of age. Families of those failing to attend scheduled follow-up visits, were contacted telephonically to ascertain the reasons, which were categorized as: not interested to continue participating, migrated, phone disconnected due to telecom change, or other reason. Results A total of 413 mother-infant dyads were enrolled. The overall attrition was 56%, with majority occurring at the first follow-up visit. This temporally coincided with a telecom service provider announcing strong incentives to switch providers. Attrition monotonically decreased at subsequent visits. The reasons were: moved away (13%), no longer interested (8%), phone disconnected (7%), and multiple other reasons (28%), the majority of whom had unreachable phones. Those who remained in the study and those lost to follow-up were similar on most demographic variables. Among common reasons for attrition in cohort studies, we experienced a new dimension introduced by telecom changes. These findings underscore the need to consider unexpected reasons for attrition in longitudinal studies, and design more robust methods to follow-up participants.
format	article
author	Joseph L. Mathew Pooja N. Patel Abram L. Wagner Vanita Suri Bhavneet Bharti Bradley F. Carlson Matthew L. Boulton
author_facet	Joseph L. Mathew Pooja N. Patel Abram L. Wagner Vanita Suri Bhavneet Bharti Bradley F. Carlson Matthew L. Boulton
author_sort	Joseph L. Mathew
title	Analysis of reasons for loss to follow up in a prospective study in Chandigarh, India and impact from telecom changes
title_short	Analysis of reasons for loss to follow up in a prospective study in Chandigarh, India and impact from telecom changes
title_full	Analysis of reasons for loss to follow up in a prospective study in Chandigarh, India and impact from telecom changes
title_fullStr	Analysis of reasons for loss to follow up in a prospective study in Chandigarh, India and impact from telecom changes
title_full_unstemmed	Analysis of reasons for loss to follow up in a prospective study in Chandigarh, India and impact from telecom changes
title_sort	analysis of reasons for loss to follow up in a prospective study in chandigarh, india and impact from telecom changes
publisher	BMC
publishDate	2021
url	https://doaj.org/article/eb1290009b054118bc47af409662e86b
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Analysis of reasons for loss to follow up in a prospective study in Chandigarh, India and impact from telecom changes

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