Studies on other types of implants, with different endpoints, study settings, follow-up times etc. may be less robust against dependent observations (e.g. multiple finger arthroplasties or when using infection as endpoint).
1 8 Two independent conditions have proven useful to explore potential surrogate endpoints in clinical settings: one stipulates that the surrogate endpoint should predict the clinical endpoint, and the other that the effect of a treatment on the surrogate endpoint should predict the effect of that treatment on the true endpoint.
Associations of Elevated FGF23 Levels with Different Endpoints in Different Settings Chronic Illness Mortality.
The key efficacy endpoints across treatment settings are summarised in Table 2. Initial results (N=8010) at a median follow-up of 25.8 months demonstrated the superiority of letrozole over tamoxifen in prolonging DFS and TTR (but not OS).
We also characterized cardiovascular parameters at the endpoint of the experimental settings.
In both cases, default video tracking settings reported endpoint values that were highly over-estimated (see default settings in Fig. S2 of Supporting Information).
Fluorescent product, caused by hydrogen peroxide-dependent, Amplex Red oxidation during hDAAO-catalysed substrate turnover, was measured on a FlexStation II (Molecular Devices) in endpoint mode with these settings: excitation 530 nm, emission 590 nm, cutoff 590 nm and photomultiplier tube on Low.
Articles were reviewed that included PRO measures as primary or secondary endpoints in clinical trial settings.
The meta-analysis was performed on a total number of patients varying between 824 and 3,246, depending on the settings and endpoints analyzed.
Box 1. Clinical settings and endpoints With these numerous non-interventional studies published, interventional controlled "phase III" trials were needed to demonstrate that the use of CTC enumeration and monitoring could improve the outcome of breast cancer patients and/or lower the medical costs paid by the patient or its insurer.
