نتایج جستجو برای: hazard ratio
تعداد نتایج: 535796 فیلتر نتایج به سال:
BACKGROUND Premature discontinuation and other forms of noncompliance with treatment assignment can complicate causal inference of treatment effects in randomized trials. The intent-to-treat analysis gives unbiased estimates for causal effects of treatment assignment on outcome, but may understate potential benefit or harm of actual treatment. The corresponding upper confidence limit can also b...
BACKGROUND The extent to which mortality differs following individual acquired immunodeficiency syndrome (AIDS)-defining events (ADEs) has not been assessed among patients initiating combination antiretroviral therapy. METHODS We analyzed data from 31,620 patients with no prior ADEs who started combination antiretroviral therapy. Cox proportional hazards models were used to estimate mortality...
Prognostic significance of elevated hemostatic markers in patients with acute myocardial infarction.
OBJECTIVES The purpose of this study was to determine whether the elevated levels of hemostatic markers in the early phase of myocardial infarction may serve as risk factors for subsequent cardiac mortality. BACKGROUND Increased plasma hemostatic markers were noted in acute myocardial infarction, indicating that the blood coagulation system is highly activated in those patients. However, ther...
BACKGROUND AND OBJECTIVES Supraventricular arrhythmias are associated with high morbidity and mortality. Nevertheless, this condition has received little attention in patients on hemodialysis. The objective of this study was to analyze the incidence of intradialysis supraventricular arrhythmia and its long-term prognostic value. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS We designed an obs...
BACKGROUND AND PURPOSE Low socioeconomic status is associated with increased morbidity and mortality from stroke. The purpose of this study was to investigate the association between 4 independent measures of socioeconomic status and mortality of patients with acute ischemic stroke and transient ischemic attack. METHODS Socioeconomic status was assessed by taking into account levels of educat...
The effects of inter-unit HLA-match on early outcomes with regards to double cord blood transplantation have not been established. Therefore, we studied the effect of inter-unit HLA-mismatching on the outcomes of 449 patients with acute leukemia after double cord blood transplantation. Patients were divided into two groups: one group that included transplantations with inter-unit mismatch at 2 ...
Never-married persons (singles) constitute a growing demographic group; yet, the magnitude of the all-cause relative mortality risk for nonelderly singles is not known and important moderating factors have not been explored. The authors used meta-analysis to examine 641 risk estimates from 95 publications that provided data on more than 500 million persons. The comparison group consisted of cur...
Background & Objectives: Triglyceride/HDL-cholesterol ratio (TG/HDL-C) has been shown as an indicator for metabolic syndrome (MetS). This study aimed to detect the role of this ratio to predict coronary heart disease (CHD) outcome in an Iranian men population with high prevalence of MetS.Methods: 1824 men ≥ 40 years old, free of clinical cardiovascular disease at baseline, were included in the ...
In this paper, the spectral ratio of mmicrotremor, HSVR, is presented for estimating the liquefaction potential of layered soil in the coastal area of the Persian Gulf, which consists of a hard sandstone layer situated between two saturated sandy layers. The surface layer is thin, with a thickness between 2 and 5 meters. The purpose of this paper is to identify the relation between the liquefac...
AIM To investigate, with extended follow-up, cause-specific mortality among low-income Black and White Americans with Type 2 diabetes who have similar socio-economic status. METHODS Black and White Americans aged 40-79 years with Type 2 diabetes (n = 12 498) were recruited from community health centres as part of the Southern Community Cohort Study. Multivariable Cox analysis was used to esti...
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