Time-Dependent Propensity Score for Assessing the Effect of Vaccine Exposure on Pregnancy Outcomes through Pregnancy Exposure Cohort Studies [PDF]
, 2014 Women are advised to be vaccinated for influenza during pregnancy and may receive vaccine at any time during their pregnancy. In observational studies evaluating vaccine safety in pregnancy, to account for such time-varying vaccine exposure, a time ...
Chambers, Christina +5 more
core +4 more sources
Modelling Survival Events with Longitudinal Covariates Measured with Error [PDF]
, 2013 In survival analysis, time-dependent covariates are usually present as longitudinal data collected periodically and measured with error. The longitudinal data can be assumed to follow a linear mixed effect model and Cox regression models may be used for ...
Cox D. R. +16 more
core +1 more source
BMJ Open, 2023 Objective This study aimed to construct prognostic models to predict the overall survival (OS) and cancer-specific survival (CSS) of patients with primary gastrointestinal melanoma (PGIM).Design An observational and retrospective study.Setting Data were ...
Lin Zhu +4 more
doaj +1 more source
Impact of Noradrenaline Administration Dosage on the Occurrence of Peripheral Intravenous Catheter–Related Venous Phlebitis in Critically Ill Patients Using a Time‐Dependent Multilevel Cox Regression Model [PDF]
Emergency Medicine InternationalPurpose: Peripheral intravenous catheter (PIVC)–administered noradrenaline offers faster treatment for septic shock but risks complications like phlebitis. We aimed to investigate the relationship between the total noradrenaline dose administered via PIVCs and the development of phlebitis by considering the ...
Hideto Yasuda +15 more
openalex +6 more sources
Risk factors for pulmonary tuberculosis in patients with chronic obstructive airway disease in Taiwan: a nationwide cohort study [PDF]
, 2013 BACKGROUND: An association between chronic obstructive pulmonary disease (COPD) and tuberculosis (TB) has been described, mainly due to smoking and corticosteroid use.
Chih-Hsin Lee +6 more
core +1 more source
Scientific Reports, 2023 Prostate cancer (PCa) patients with lymph node involvement (LNI) constitute a single-risk group with varied prognoses. Existing studies on this group have focused solely on those who underwent prostatectomy (RP), using statistical models to predict ...
Zi-He Peng +10 more
doaj +1 more source
Survivalanalysen mit Berücksichtigung der zeitlichen Kovariablenentwicklung in klinischen Studien [PDF]
, 1996 Data from the Stanford Heart Transplantation Study and our own study on brain tumor include time-dependent covariates like transplantation, which may switch only once, and others changing their value several times during follow-up. But classical analyses
Aydemir, Sibel +2 more
core +1 more source
A Novel Predictor Tool of Biochemical Recurrence after Radical Prostatectomy Based on a Five-MicroRNA Tissue Signature [PDF]
, 2019 Within five to ten years after radical prostatectomy (RP), approximately 15-34% of prostate cancer (PCa) patients experience biochemical recurrence (BCR), which is defined as recurrence of serum levels of prostate-specific antigen >0.2 µg/L, indicating ...
Erbersdobler, Andreas +8 more
core +2 more sources
The rate of CD4 decline as a determinant of progression to AIDS independent of the most recent CD4 count [PDF]
, 1998 The data of two cohort studies of HIV-infected individuals were used to examine whether the rate of CD4 decline is a determinant of HIV progression, independent of the most recent CD4 count.
Lee, CA +5 more
core +1 more source
BMC Medical Research Methodology, 2005 Background Epidemiological studies of exposures that vary with time require an additional level of methodological complexity to account for the time-dependence of exposure.
Platt Robert W +3 more
doaj +1 more source