LOST to follow-up Information in Trials (LOST-IT): a protocol on the potential impact
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منابع مشابه
LOST to follow-up Information in Trials (LOST-IT): a protocol on the potential impact
BACKGROUND Incomplete ascertainment of outcomes in randomized controlled trials (RCTs) is likely to bias final study results if reasons for unavailability of patient data are associated with the outcome of interest. The primary objective of this study is to assess the potential impact of loss to follow-up on the estimates of treatment effect. The secondary objectives are to describe, for publis...
متن کاملPotential impact on estimated treatment effects of information lost to follow-up in randomised controlled trials (LOST-IT): systematic review.
OBJECTIVE To assess the reporting, extent, and handling of loss to follow-up and its potential impact on the estimates of the effect of treatment in randomised controlled trials. DESIGN Systematic review. We calculated the percentage of trials for which the relative risk would no longer be significant under a number of assumptions about the outcomes of participants lost to follow-up. DATA S...
متن کاملLost to follow-up.
results gained from primary attenders at a tate review clinic after shoulder surgery may not be representative of the outcome: the average self-assessment of the non-attenders was lower by one class. Age differences have been shown to affect the self assessment of health (Idler 1993). In this study, however, with an average age of 5 1.1 years among attenders and 48.8 years in non-attenders, thi...
متن کاملEstimating the Impact of Lost to Follow-up on Breast Cancer Patients' Disease-free Survival
Background The 5-year survival rate for patients with breast cancer is much higher than patients with other types of cancer. Due to this longer survival period, breast cancer patients also tend to have increased rates of lost to follow-up, when compared to other cancers. When a patient becomes lost, the occurrence of distant metastasis cannot be reliably ascertained, unless the patient had a br...
متن کاملPatients lost to follow - up after midurethral sling surgery :
ARTICLE INFO ______________________________________________________________ ______________________ Purpose: To assess the ratio of patients lost to follow-up (FU) after midurethral sling surgery, to evaluate their success rate and current status, and to identify the reasons for FU loss. Materials and Methods: Two-hundred thirty-eight patients who received trans-obturator tape (TOT) surgery were...
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ژورنال
عنوان ژورنال: Trials
سال: 2009
ISSN: 1745-6215
DOI: 10.1186/1745-6215-10-40