Loss to follow-up in a longitudinal study on aging in Spain

2001 ◽  
Vol 54 (5) ◽  
pp. 501-510 ◽  
Author(s):  
M.V Zunzunegui ◽  
F Béland ◽  
P Gutiérrez-Cuadra
Keyword(s):  
Longitudinal Study ◽  
Loss To Follow Up

scholarly journals Loss to follow-up and HIV incidence in female sex workers in Kaiyuan, Yunnan Province China: a nine year longitudinal study

2016 ◽  
Vol 16 (1) ◽  
Author(s):  
Yingying Su ◽  
Guowei Ding ◽  
Kathleen H. Reilly ◽  
Jessie L. Norris ◽  
Huixin Liu ◽  
...  
Keyword(s):  
Longitudinal Study ◽  
Sex Workers ◽  
Female Sex Workers ◽  
Yunnan Province ◽  
Hiv Incidence ◽  
Loss To Follow Up ◽  
Female Sex

LOSS-TO-FOLLOW UP AND SELECTION BIAS IN A LONGITUDINAL STUDY OF CLEAN-UP WORKERS OF THE PRESTIGE OIL SPILL

2011 ◽  
Vol 2011 (1) ◽  
Author(s):  
Jan-Paul Zock ◽  
Gema Rodríguez-Trigo ◽  
Emma Rodríguez-Rodríguez ◽  
Aina Espinosa ◽  
Ana Souto-Alonso ◽  
...  
Keyword(s):  
Longitudinal Study ◽  
Selection Bias ◽  
Oil Spill ◽  
Loss To Follow Up ◽  
Prestige Oil Spill ◽  
The Prestige

Understanding loss to follow-up in a longitudinal study of people with traumatic brain injury

Brain Injury ◽  
2021 ◽  
pp. 1-9
Author(s):  
Leia Vos ◽  
Michael W. Williams ◽  
Lisa Spielman ◽  
Andrea Ochoa ◽  
Esther Ngan ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Longitudinal Study ◽  
Brain Injury ◽  
Loss To Follow Up

scholarly journals Do Participants With Different Patterns of Loss to Follow-Up Have Different Characteristics? A Multi-Wave Longitudinal Study

2016 ◽  
Vol 26 (1) ◽  
pp. 45-49 ◽  
Author(s):  
Nargess Saiepour ◽  
Robert Ware ◽  
Jake Najman ◽  
Peter Baker ◽  
Alexandra Clavarino ◽  
...  
Keyword(s):  
Longitudinal Study ◽  
Loss To Follow Up ◽  
Different Characteristics

The effect of non-random loss to follow-up on group mean estimates in a longitudinal study

2003 ◽  
Vol 19 (1) ◽  
pp. 15-23 ◽  
Author(s):  
Ludovic G.P.M. van Amelsvoort ◽  
Anna J.H.M. Beurskens ◽  
IJmert Kant ◽  
Gerard M.H. Swaen
Keyword(s):  
Longitudinal Study ◽  
Loss To Follow Up ◽  
Random Loss

scholarly journals Loss to follow-up was used to estimate bias in a longitudinal study: a new approach

2015 ◽  
Vol 68 (8) ◽  
pp. 870-876 ◽  
Author(s):  
Jennifer Powers ◽  
Meredith Tavener ◽  
Anna Graves ◽  
Deborah Loxton
Keyword(s):  
Longitudinal Study ◽  
New Approach ◽  
Loss To Follow Up

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

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Joseph L. Mathew ◽  
Pooja N. Patel ◽  
Abram L. Wagner ◽  
Vanita Suri ◽  
Bhavneet Bharti ◽  
...  
Keyword(s):  
Longitudinal Study ◽  
Cohort Studies ◽  
Mobile Phones ◽  
Demographic Variables ◽  
Robust Methods ◽  
Loss To Follow Up ◽  
Telecom Service ◽  
A Prospective Study ◽  
Lost To Follow Up

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.

scholarly journals Patterns of handgun divestment among handgun owners in California

2022 ◽  
Vol 9 (1) ◽  
Author(s):  
Sonja A. Swanson ◽  
Matthew Miller ◽  
Yifan Zhang ◽  
Lea Prince ◽  
Erin E. Holsinger ◽  
...  
Keyword(s):  
Longitudinal Study ◽  
Younger Adults ◽  
Loss To Follow Up ◽  
Cumulative Proportion ◽  
Initial Acquisition ◽  
Registered Voters

Abstract Background Little is known about voluntary divestment of firearms among US firearm owners. Here, we aim to estimate the proportion of handgun owners who divest their handguns in the years following their initial acquisition; examine the timing, duration, and dynamics of those divestments; and describe characteristics of those who divest. Methods We use data from the Longitudinal Study of Handgun Ownership and Transfer, a cohort of registered voters in California with detailed information on 626,756 adults who became handgun owners during the 12-year study period, 2004–2016. For the current study, persons were followed from the time of their initial handgun acquisition until divestment, loss to follow-up, death, or the end of the study period. We describe the cumulative proportion who divest overall and by personal and area-level characteristics. We also estimate the proportion who reacquired handguns among persons who divested. Results Overall, 4.5% (95% CI 4.5–4.6) of handgun owners divested within 5 years of their first acquisition, with divestment relatively more common among women and among younger adults. Among those who divested, 36.6% (95% CI 35.8–37.5) reacquired a handgun within 5 years. Conclusions Handgun divestment is rare, with the vast majority of new handgun owners retaining them for years.

Loss to Follow-Up in a Longitudinal Study on Urogenital Tract Symptoms in Dutch Older Men

2005 ◽  
Vol 75 (1) ◽  
pp. 30-37 ◽  
Author(s):  
Marco H. Blanker ◽  
Jennie Prins ◽  
J.L.H.Ruud Bosch ◽  
Boris W.V. Schouten ◽  
Roos M.D. Bernsen ◽  
...  
Keyword(s):  
Longitudinal Study ◽  
Older Men ◽  
Urogenital Tract ◽  
Loss To Follow Up
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