A5090790006- Spaceflight effects on biology
- Merger and Competition Analysis
- Insurance, Mortality, Demography, Risk Management
- Cerebral Palsy and Movement Disorders
- Space Exploration and Technology
- Health, Environment, Cognitive Aging
- Radiation Therapy and Dosimetry
- Air Quality and Health Impacts
- Economic Theory and Institutions
- Radiation Dose and Imaging
- Digital Platforms and Economics
- Cardiovascular and Diving-Related Complications
- Family and Disability Support Research
- Chronic Disease Management Strategies
- Corporate Finance and Governance
- Neonatal and fetal brain pathology
- Healthcare Policy and Management
- Cardiovascular Effects of Exercise
- Climate Change and Health Impacts
- Shoulder Injury and Treatment
- Hip disorders and treatments
- Gender, Labor, and Family Dynamics
- Technology Assessment and Management
- Orthopedic Surgery and Rehabilitation
- Injury Epidemiology and Prevention
KBR (United States)
2023-2024
The University of Texas Medical Branch at Galveston
2024
Johnson Space Center
2022-2024
Baylor College of Medicine
2020
The University of Texas at Austin
2019
Menlo School
2015
The University of Texas Health Science Center at Houston
2010-2013
Pfizer (United States)
2012
University of British Columbia
1998-2004
University of Buckingham
1994
Journal Article Losses From Horizontal Merger: The Effects of an Exogenous Change in Industry Structure on Cournot-Nash Equilibrium Get access Stephen W. Salant, Salant Rand Corporation Search for other works by this author on: Oxford Academic Google Scholar Sheldon Switzer, Switzer University Maryland Robert J. Reynolds I.C.F., Inc. Quarterly Economics, Volume 98, Issue 2, May 1983, Pages 185–199, https://doi.org/10.2307/1885620 Published: 01 1983
This study investigated mortality and causes of death between 1988 1999 in 14781 persons (6702 female) with Down syndrome California, comparing age, sex, ethnicity, other factors. Mean age at the start follow-up was 14 years 8 months (SD 14y 10mo). During period 600 died. The standardized ratio (SMR) for population 5.5. Blacks were greater risk than whites, Hispanics, or Asians (relative = 1.5). Mortality declined during period, especially children congenital heart defects. Leukemia (SMR...
This study investigated the possibility of improved survival in cerebral palsy (CP) over a 20‐year period. Participants were 47 259 persons with CP receiving services from State California between 1983 and 2002. The person–year approach was used. asks whether probability dying given calendar year changes period after age severity disability are taken into account. An appreciable improvement time found children severe disabilities adults who required gastrostomy feeding. In these groups,...
This study aimed to determine the probability that a child with cerebral palsy (CP) will lose or gain ambulatory ability through adolescence and young adulthood. We analyzed retrospectively data from 1987 2002 on Californians CP initially aged 10 years (SD 0.9y; n=7550 [4304 males, 3246 females]) 25 0.8y; n=5721 [3261 2460 who had varying levels of (initial Gross Motor Function Classification System Levels I-IV). used Aalen-Johansen estimator estimate probabilities transition other in...
Abstract NASA uses a continuous risk management process to seek out new knowledge of spaceflight-induced human health and performance. The evidence base that informs the assessments in this domain is constantly changing as more information gleaned from presence space ongoing research. However, limitations are difficult characterize because fewer than 700 humans have ever flown space, comes variety sources span disciplines, including engineering, medicine, food nutrition, many other life...
The objective of this prospective, observational clinical study was to evaluate the safety and efficacy once-daily twice-daily directly observed therapy (DOT) in human immunodeficiency virus (HIV)-infected patients undergoing methadone treatment. Methadone highly active antiretroviral (HAART) were dispensed daily as DOT, with HAART group self-administering second dose. Clinical laboratory end points monitored, along impact ongoing cocaine use. We studied 54 coinfected HIV hepatitis C virus....
Abstract Space travelers are exposed to unique forms of ionizing radiation that pose potentially serious health hazards. Prior analyses have attempted quantify excess mortality risk for astronauts space radiation, but low statistical power has frustrated inferences. If exposure deep were causally linked deaths due two particular causes, e.g., cancer and cardiovascular disease, then those cause-specific would not be statistically independent. In this case, a Kaplan-Meier survival curve...
Objectives Cancer incidence and mortality are important outcomes in the surveillance of long-term astronaut health. We compare cancer rates, cancer-specific case-fatality ratios US astronauts with those general population. Methods use standardised (SIRs) (SMRs) to index various cancers against rates population, from cohort inception April 1959 through 31 December 2017. lethality these using relative ratio. Results Overall were slightly lower than expected national SIR 82 (95% CI 63 104) SMR...
<b>Objective: </b> To determine the causes of death individuals with developmental disabilities that occur more frequently among those remote symptomatic epilepsy (i.e., occurring in persons delay or identified brain lesions) than for without. <b>Methods: The authors compared mortality (n = 10,030) and without 96,163) history a California population mild disabilities, 1988 to 2002. Subjects had traumatic injury, cerebral palsy, Down syndrome, autism, disability other unknown etiology. There...
As part of the risk management plan for human system risks at US National Aeronautics and Space Administration (NASA), NASA Human Systems Risk Board uses causal diagrams (in form directed, acyclic graphs, or DAGs) to communicate complex web events that leads from exposure spaceflight environment performance health outcomes. However, use DAGs in this way is relatively new NASA, thus far, no method has been articulated testing their veracity using empirical data. In paper, we demonstrate a set...
This study investigated mortality and causes of death between 1988 1999 in 14781 persons (6702 female) with Down syndrome California, comparing age, sex, ethnicity, other factors. Mean age at the start follow-up was 14 years 8 months (SD 14y 10mo). During period 600 died. The standardized ratio (SMR) for population 5.5. Blacks were greater risk than whites, Hispanics, or Asians (relative risk=1.5). Mortality declined during period, especially children congenital heart defects. Leukemia...