OBJECTIVE To determine if patients with nonarteritic ischemic optic neuropathy (NAION) have sleep apnea syndrome (SAS), an entity characterized by repetitive upper airway obstructions during sleep, inducing hypoxia and sleep disruption. METHODS We recruited 17 patients with NAION and 17 age- and sex-matched controls from patients referred for treatment because of suspected restless legs syndr...

OBJECTIVE The present study aimed to investigate predictors for planned suicide attempters. METHODS This study included 1,003 patients who attempted suicide and visited emergency department. They were divided into two groups, planned suicide attempters (SAs; n=133 [13.3%]) and impulsive SAs (n=870, [86.7%]), and the demographic variables, clinical characteristics, factors related to suicide, ...

In wireless sensor networks (WSNs), each sensor node can estimate the global parameter from the local data in a distributed manner. This paper proposed a robust diffusion estimation algorithm based on a minimum error entropy criterion with a self-adjusting step-size, which are referred to as the diffusion MEE-SAS (DMEE-SAS) algorithm. The DMEE-SAS algorithm has a fast speed of convergence and i...

This paper discusses the implementation of SAS Enterprise BI Server at BlueCross BlueShield of Minnesota (BCBSM). It provides an overview of the hardware and software architecture and the deployment of SAS Enterprise BI Server within a mature enterprise-wide and external web-facing infrastructure in a multi-tier UNIX environment. This paper also provides highlights of the installation and confi...

2 Step-by-Step Basic Statistics Using SAS: Student Guide. Chapter 13: Independent-Samples t Test. Chapter 14.Description. Larry Hatchers Step-by-Step Basic Statistics Using SAS: Student Guide first introduces you to SAS software, then leads you through a variety of.With Larry Hatchers Step-by-Step Basic Statistics Using SAS: Exercises, you apply what you. I can recommend the Student Guide and E...

Recent reports have suggested that flow volume curve abnormalities may be of interest in the diagnosis of obstructive sleep apnea syndromes by showing either extrathoracic airway obstruction (ratio of expiratory flow to inspiratory flow at 50 percent of forced vital capacity [FEF50/FIF50] exceeding 1) or upper airway fluttering (indicated by a sawtooth aspect on the mid-half of the inspiratory ...

BACKGROUND Up to 30% of patients with severe aortic stenosis (SAS; indexed aortic valve area <0.6 cm(2)/m(2)) present with low transvalvular gradient despite a normal left ventricular ejection fraction. Presently, there is intense controversy as to the prognostic implications of such findings. Accordingly, the aim of the present work was to compare the natural history of patients with paradoxic...

Which merges files better: the SAS  DATA Step or SAS SQL? Traditionally, the only way to merge files in SAS was via the SAS DATA Step. Now SAS provides a Structured Query Language (SQL) facility which also merges files. This tutorial compares and contrasts these two merge facilities. It examines the pros and cons of each merge technique. It looks at DATA Step code to perform specific merges an...

The activation of Wnt signaling has been reported in many types of squamous cell carcinoma. In this study, using human oral squamous cell carcinoma (OSCC) cells with different metastatic potential, we investigated the involvement of Wnt signaling in metastasis. Further, we aimed to elucidate the characteristic biological features related to high metastatic potential and to identify new target m...