BACKGROUND Tuberculosis is classified as either pulmonary or extra-pulmonary (EPTB). While much focus has been paid to pulmonary tuberculosis, EPTB has received scant attention. Moreover, EPTB is viewed as one wastebasket diagnosis, as "the other" which is not pulmonary. METHODS This is a retrospective cohort study of all patients treated for EPTB in the state of Texas between January 2000 an...

In the mid-1980s, many European countries introduced ...xed-term contracts. This paper studies the possible implications of such reforms for the duration distribution of unemployment. I estimate a parametric duration model using cross-sectional data drawn from the Spanish Labor Force Survey from 1980 to 1994 to analyze the probability of leaving unemployment before and after the introduction of...

The design of grating-based instruments to handle and condition coherent ultrafast pulses in the extreme-ultraviolet is discussed. The main application of such instruments is the monochromatization of high-order laser harmonics and free-electron-laser pulses in the femtosecond time scale. Broad-band monochromators require the use of diffraction gratings at grazing incidence. A grating can be us...

Space and time appear to play key roles in the way that information is organized in short-term memory (STM). Some argue that they are crucial contexts within which other stored features are embedded, allowing binding of information that belongs together within STM. Here we review recent behavioral, neurophysiological and imaging studies that have sought to investigate the nature of spatial, seq...

premature and critically sick infants frequently experience several interventions, including blood transfusions, parentral nutrition, and prescriptions during hospitalization that could affect the result of thyroid function test. this study aims to investigate the correlation between thyroxine level and clinical short term outcome among the newborn infants in the neonatal intensive care unit (n...

background increases in aminotransferases (transaminitis) are potential major adverse reactions seen with long-term use of methotrexate (mtx). the aim of this study, therefore was to evaluate the incidence of mtx induced hepatotoxicity and its risk factors among rheumatoid arthritis (ra) patients. methods this retrospective study described 286 patients with ra who received ≤ 7.5 mg mtx weekly...

in this paper, the cox proportional hazard model is used to answer several questions. in general, fourteen variables are applied in four groups: firm, industry, expenditure human resources specific characteristics as well. according to the previous literature in this field, the findings of this paper also show that the factors which affect life duration of firms are different between industries...

BACKGROUND Based on the well-described excess of schizophrenia births in winter and spring, we hypothesised that individuals with schizophrenia (a) would be more likely to be born during periods of decreased perinatal sunshine, and (b) those born during periods of less sunshine would have an earlier age of first registration. METHODS We undertook an ecological analysis of long-term trends in ...

SUMMARY 2000 ,Tehran schoolaged children, were included in a randomized trial to evaluate the risk factors for otitis media with effusion through interviews, a written questionnaire, otoscopy pneumatic and tympanometry. We found that the incidence of OME increased in children with parents who smoke (P<0.001) and were bottle fed as babies (P<0.005). Others factor such as, allergy, sinusitis, p...