Results 21 to 30 of about 10,420,359 (296)

Optimal predictive control of water transport systems: Arrêt-Darré/Arros case study [PDF]

open access: yes, 2009
This paper proposes the use of predictive optimal control as a suitable methodology to manage efficiently transport water networks. The predictive optimal controller is implemented using MPC control techniques.
Ayesa, Eduardo   +11 more
core   +4 more sources

Risk Factors for Primary Clostridium difficile Infection; Results From the Observational Study of Risk Factors for Clostridium difficile Infection in Hospitalized Patients With Infective Diarrhea (ORCHID)

open access: yesFrontiers in Public Health, 2020
Background: There are inconsistent data on the risk factors for Clostridium difficile infection (CDI) in the literature.Aims: To use two C. difficile infection (CDI) case-control study groups to compare risk factors in hospitalized patients with diarrhea
Kerrie Davies   +19 more
doaj   +1 more source

Migraine and vascular disease biomarkers: A population-based case-control study. [PDF]

open access: yes, 2018
Background The underpinnings of the migraine-stroke association remain uncertain, but endothelial activation is a potential mechanism. We evaluated the association of migraine and vascular disease biomarkers in a community-based population.
Ferrari, Michel D.   +9 more
core   +2 more sources

The association between environmental factors and the development of Crohn's disease with focusing on passive smoking: A multicenter case-control study in Japan.

open access: yesPLoS ONE, 2019
BackgroundThe number of patients with Crohn's disease (CD) in Japan has recently been increasing. We examined the association between environmental factors and the development of CD in Japanese focusing on passive smoking.MethodsWe conducted a ...
Kyoko Kondo   +8 more
doaj   +1 more source

Persistent Contaminants and Herpesvirus OtHV1 Are Positively Associated With Cancer in Wild California Sea Lions (Zalophus californianus)

open access: yesFrontiers in Marine Science, 2020
The prevalence of cancer in wild California sea lions (Zalophus californianus) is one of the highest amongst mammals, with 18–23% of adult animals examined post-mortem over the past 40 years having urogenital carcinoma. To date, organochlorines, genotype
Frances M. D. Gulland   +13 more
doaj   +1 more source

Risk factors associated with loss to follow-up from tuberculosis treatment in Tajikistan: a case-control study

open access: yesBMC Infectious Diseases, 2017
Background There are very few studies on reasons for loss to follow-up from TB treatment in Central Asia. This study assessed risk factors for LTFU and compared their occurrence with successfully treated (ST) patients in Tajikistan.
Jessica Wohlleben   +5 more
doaj   +1 more source

a case–control seroprevalence study [PDF]

open access: yes, 2015
Background Infection with Toxoplasma gondii can be acquired via the ingestion of undercooked or raw meat containing tissue cysts, or via ingestion of water contaminated with oocysts.
Alvarado-Esquivel, Cosme   +7 more
core   +1 more source

Designing Case-Control Studies [PDF]

open access: yesEnvironmental Health Perspectives, 1979
Identification of confounding factors, evaluation of their influence on cause-effect associations, and the introduction of appropriate ways to account for these factors are important considerations in designing case-control studies. This paper presents designs useful for these purposes, after first providing a statistical definition of a confounding ...
openaire   +2 more sources

Motor skills in children with primary headache: A pilot case-control study [PDF]

open access: yes, 2018
Background: Headache is the most common painful manifestation in the developmental age, often accompanied by severe disability such as scholastic absenteeism, low quality of academic performance and compromised emotional functioning. The aim of the study
Cerroni F.   +21 more
core   +1 more source

Combining controls can improve power in two-stage association studies

open access: yesBMC Genetics, 2018
Background High dimensional case control studies are ubiquitous in the biological sciences, particularly genomics. To maximise power while constraining cost and to minimise type-1 error rates, researchers typically seek to replicate findings in a second ...
James Liley
doaj   +1 more source

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