OBJECTIVE This study aims to develop and validate a new comorbidity index using data from hospitalized patients in South Korea. STUDY DESIGN Retrospective cohort study. SETTING Hospital inpatients. STUDY PARTICIPANTS Data from 4677 hospitalized patients aged 40-79 who had admitted in a medical center in Korea between September and December in 1997 were individually linked to national mort...

BACKGROUND Hypoglycemia is associated with a higher risk of death. This study analyzed various body mass index (BMI) categories and mortalities of severe hypoglycemic patients with type 2 diabetes mellitus (DM) in a hospital emergency department. METHODS The study included 566 adults with type 2 diabetes who were admitted to 1 medical center in Taiwan between 2008 and 2009 with a diagnosis of...

OBJECTIVE This study aimed to identify factors associated with the health care of patients with HIV/AIDS who drop out. METHODS The study was developed in a specialized health care unit of a University hospital in Rio de Janeiro, Brazil, considering a stratified sample of adult patients including all dropout cases (155) and 44.0% of 790 cases under regular follow-up. Bivariate analyses were us...

conclusions the use of smoothing methods helps us to eliminate non-linear effects but it is more appropriate to use cox proportional hazards model in medical data because of its’ ease of interpretation and capability of modeling both continuous and discrete covariates. also, cox proportional hazards model and smoothing methods analysis identified that age at diagnosis and tumor size were indepe...

BACKGROUND The effects of hospital-acquired Clostridium difficile infection (CDI) on patient outcomes are incompletely understood. We conducted this study to determine the independent impact of hospital-acquired CDI on in-hospital mortality after adjusting for the time-varying nature of CDI and baseline mortality risk at hospital admission. METHODS This retrospective observational study used ...

BACKGROUND AND PURPOSE Internal fixation (IF) in femoral neck fractures has high reoperation rates and some predictors of failure are known, such as age, quality of reduction, and implant positioning. Finding new predictors of failure is an ongoing process, and in this study we evaluated the importance of low bone mineral density (BMD). PATIENTS AND METHODS 140 consecutive patients (105 femal...

OBJECTIVE The aim of this study was to identify biomarkers with prognostic value in the setting of surgically treated endometrial cancer. METHODS Medical data for 282 patients with surgically treated endometrial cancer were reviewed retrospectively. Preoperative concentrations of six serum biomarkers (CA125, CA15-3, C-reactive protein [CRP], D-dimer [D-D], platelet-to-lymphocyte ratio [PLR], ...

A stratified survival analysis was compared with a non-stratified model to identify significant factors affecting the productive life of commercial sows and to estimate the heritability for sow productive life. Data for 3,074 sows were used for the survival analysis under a Cox model. The stratified model identified factors associated with sow survival that were not statistically significant in...