Results 1 to 10 of about 21,209 (118)

Loss to Follow-up: A Deceptive Enigma [PDF]

Annals of the National Academy of Medical Sciences (India), 2021
Loss to follow-up indicates both patients not reporting and inability to trace them during the required follow-up period or study period. Significant loss to follow-up can affect the validity of a study and thereby the impact of that study. The importance of loss to follow-up has been very scarcely and meagerly highlighted in literature.
Sandeep Patel, Vishal Kumar, Shahnawaz Khan, Amit Salaria   +3 more
openaire   +1 more source

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

BMC Research Notes, 2021
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
Joseph L. Mathew, Pooja N. Patel, Abram L. Wagner, Vanita Suri, Bhavneet Bharti, Bradley F. Carlson, Matthew L. Boulton   +6 more
doaj   +1 more source

Does time to loss to follow-up differ among adult tuberculosis patients initiated on tuberculosis treatment and care between general hospital and health centers? A retrospective cohort study

Tropical Medicine and Health, 2020
Background Patients’ loss to follow-up (LTFU) from tuberculosis treatment and care is a growing worry in Ethiopia. But, available information is inadequate in assessing the time to tuberculosis patient loss to follow-up difference between health centers ...
Tamrat Shaweno, Masrie Getnet, Chaltu Fikru   +2 more
doaj   +1 more source

Factors associated with loss to follow-up among people with tuberculosis in the country of Georgia: a cohort study

Monaldi Archives for Chest Disease, 2021
Despite having universal access to tuberculosis (TB) treatment, loss to follow-up (LFU) rates remain high in Georgia, 6% among drug-susceptible TB (DS-TB) patients (2017 cohort) and 19% among drug-resistant TB (DR-TB) patients diagnosed in 2016. A cohort
Natalia Adamashvili, Kristina Akopyan, Nestani Tukvadze, Kostyantyn Dumchev, Yuliia Sereda, Irma Khonelidze, Giorgi Kuchukhidze   +6 more
doaj   +1 more source

Prevalence and reasons of loss to follow-up in HIV clinics: a systematic review of current evidence

HIV & AIDS Review. International Journal of HIV-Related Problems, 2022
Introduction: Loss to follow-up (LTFU) slows the progress in reaching the goals of human immunodeficiency virus (HIV) prevention and treatment. Therefore, it is important to understand the causes behind this phenomena.
SeyedAhmad SeyedAlinaghi, Amirali Karimi, Alireza Barzegary, Zahra Pashaei, Ghazal Zargari, Shaghayegh Kianzad, Mehrzad MohsseniPour, Pegah Mirzapour, Amirata Fakhfouri, Esmaeil Mehraeen, Omid Dadras   +10 more
doaj   +1 more source

Basic principles of sample size calculation

Journal of the Practice of Cardiovascular Sciences, 2020
The calculation of sample size helps a medical researcher to assess cost, time, and feasibility of his project besides scientific justification and validity. Although frequently reported in journals, the details or the elements of sample size calculation
Shivam Pandey
doaj   +1 more source

Proportion and reasons for loss to follow-up in a cohort study of people who inject drugs to measure HIV and HCV incidence in Kerman, Iran

Substance Abuse Treatment, Prevention, and Policy, 2021
Background Understanding the reasons for loss to follow-up (LTFU) in cohort studies, especially among marginalized groups such as people who inject drugs (PWID), is needed to strengthen the rigor of efficacy trials for prevention and treatment ...
Ghazal Mousavian, Nima Ghalekhani, Fatemeh Tavakoli, Willi McFarland, Armita Shahesmaeili, Heidar Sharafi, Mehrdad Khezri, Soheil Mehmandoost, Jasem Zarei, Hamid Sharifi, Ali Mirzazadeh   +10 more
doaj   +1 more source

Loss to follow‐up in an international, multicentre observational study [PDF]

HIV Medicine, 2008
ObjectiveThe aim of this work was to assess loss to follow‐up (LTFU) in EuroSIDA, an international multicentre observational cohort study.MethodsLTFU was defined as no follow‐up visit, CD4 cell count measurement or viral load measurement after 1 January 2006.
A. Mocroft, O. Kirk, P. Aldins, A. Chies, A. Blaxhult, N. Chentsova, N. Vetter, F. Dabis, J. Gatell, J. D. Lundgren, M. Losso, A. Duran, N. Vetter, I. Karpov, A. Vassilenko, V. M. Mitsura, O. Suetnov, N. Clumeck, S. De Wit, B. Poll, R. Colebunders, K. Kostov, J. Begovac, L. Machala, H. Rozsypal, D. Sedlacek, J. Nielsen, J. Lundgren, T. Benfield, O. Kirk, J. Gerstoft, T. Katzenstein, A. B. E. Hansen, P. Skinhøj, C. Pedersen, L. Oestergaard, K. Zilmer, J. Smidt, M. Ristola, C. Katlama, J. P. Viard, P. M. Girard, J. M. Livrozet, P. Vanhems, C. Pradier, F. Dabis, D. Neau, J. Rockstroh, R. Schmidt, J. van Lunzen, O. Degen, H. J. Stellbrink, S. Staszewski, J. Bogner, G. Fätkenheuer, J. Kosmidis, P. Gargalianos, G. Xylomenos, J. Perdios, G. Panos, A. Filandras, E. Karabatsaki, H. Sambattakou, D. Banhegyi, F. Mulcahy, I. Yust, D. Turner, M. Burke, S. Pollack, G. Hassoun, S. Maayan, A. Chiesi, R. Esposito, I. Mazeu, C. Mussini, C. Arici, R. Pristera, F. Mazzotta, A. Gabbuti, V. Vullo, M. Lichtner, A. Chirianni, E. Montesarchio, M. Gargiulo, G. Antonucci, F. Iacomi, P. Narciso, C. Vlassi, M. Zaccarelli, A. Lazzarin, R. Finazzi, M. Galli, A. Ridolfo, A. d'Arminio Monforte, B. Rozentale, P. Aldins, S. Chaplinskas, R. Hemmer, T. Staub   +98 more
openaire   +8 more sources

Loss to follow-up [PDF]

Evidence-Based Spine-Care Journal, 2011
In this issue, we answer three questions with respect to loss to follow-up in a clinical trial: How important is loss to follow-up? How is loss to follow-up calculated? How many patients can be lost to follow-up without mistrusting the results? 1. How important is loss to follow-up?
openaire   +2 more sources

LOSS TO FOLLOW-UP MATTERS

The Journal of Bone and Joint Surgery. British volume, 1997
Survival analysis of joint replacement relies on the assumption that surgical procedures in patients lost to follow-up have the same chance of failing as those in patients who continue to be assessed. Our study questions that assumption. During the 16-year follow-up of 2268 patients who had received total hip replacements 142 (6%) were lost to follow-
Murray, D, Britton, A, Bulstrode, C
openaire   +2 more sources