BACKGROUND Studies comparing internally linked (person-identifying) and unlinked (episodes of care) hospital discharge data (HDD) on hip fractures have mainly focused on incidence overestimation by unlinked HDD, but little is known about the impact of overestimation on patient profiles such as comorbidity estimates. In view of the continuing use of unlinked HDD in hip fracture research and the ...

PURPOSE To facilitate the analysis of lacrimal conditions, we utilized high-definition dacryoendoscopy (HDD) and undertook observations with a pressure-controlled air-insufflation system. We report the safety and performance of HDD. METHODS In this retrospective, non-randomized clinical trial, 46 patients (14 males and 32 females; age range 39-91 years; mean age ± SD 70.3±12.0 years) who had ...

In this paper, the effects of two flow-induced vibration (FIV) mitigation components on hard disk drive (HDD) airflow, vortex splitters and flow diverters, were verified. The edges of the components were also modified by filleting and the resulting effect on airflow determined. A perspective review on HDDs and their operation, and the mechanism and mitigation of FIV was discussed. Three suitabl...

AIMS To discover the predictors of change in the frequency of heavy drinking (HD) over a 4-year period in alcohol dependent (AD)-individuals identified in the general population, namely, among participants of the US National Epidemiologic Survey on Alcohol and Related Conditions interviewed at Wave 1 (2001-2002) and at Wave 2 (2004-2005). METHODS The study cohort included subjects meeting DSM...

PURPOSE This study evaluated the efficacy of the HemCon Dental Dressing (HDD; HemCon Medical Technologies, Inc, Beaverton, OR) hemostatic oral wound dressing derived from the US military HemCon Bandage combat wound dressing and whether early hemostasis affects postoperative care and surgical healing outcomes following oral surgical procedures. PATIENTS AND METHODS All patients aged 18 to 90, ...

In recent years, the future trend of micro HDD driver IC for large capacity micro HDD is to become lighter, thinner, shorter and smaller. Among all the options available for micro HDD driver IC’s assembly, warpage is an important issue related to micro HDD driver IC manufacturability and reliability. The optimal packaging manufacturing process for driver IC for micro HDD is chip scale package (...

This article advocates factorized and hybrid dimensional decompositions (FDD/HDD), as alternatives to analysis-of-variance dimensional decomposition (ADD), for second-moment statistical analysis of multivariate functions. New formulas revealing the relationships between component functions of FDD and ADD are proposed. While ADD or FDD is relevant when a function is strongly additive or strongly...

US Army Research Laboratory researchers designed a head-up display (HUD) that overlays driving information on a switchable vision block. Bradley and Stryker drivers were surveyed for recommendations to incorporate in the prototype. A simulation experiment was conducted to evaluate a HUD versus a traditional head-down display (HDD). Results about driving task performance were mixed, with the HUD...