Results 211 to 220 of about 182,217 (266)

Joint effects of temperature and relative humidity on COPD hospital admissions in England, 2003-2021: A nationwide case-crossover study

Xi D, De la Cruz Libardi A, Pinho-Gomes AC, Davies B, Gasparrini A, Blangiardo M, Konstantinoudis G.   +6 more
europepmc   +1 more source

Adjuvanted vs High-Dose Influenza Vaccines in Older US Adults: A Cluster Randomized Crossover Study.

JAMA Netw Open
Hsiao A, Leong T, Fireman B, Hansen J, Zerbo O, Jacobson KB, Liao LD, Haag MDM, McGovern I, Zhang B, Dang J, Klein NP.   +11 more
europepmc   +1 more source

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A study on schema preservation by crossover

Systems and Computers in Japan, 2002
AbstractThis paper considers the combinatorial optimization problem in which the solution (sample) can be decomposed linearly into multiple schemata. Focusing on an arbitrary kind of schema, the schema preservation mechanism of the crossover in the genetic algorithm is discussed from the viewpoint of the increase or decrease of the number of samples ...
Kimihiro Yamamoto, Shozo Naito
openaire   +1 more source

Crossover studies with survival outcomes

Statistical Methods in Medical Research, 2011
Crossover designs are well known to have major advantages when comparing the effect of two treatments which do not interact. With a right-censored survival endpoint, however, this design is quickly abandoned in favour of the more costly parallel design.
Jozefien, Buyze, Els, Goetghebeur
openaire   +2 more sources

A comparative study of crossover in differential evolution

Journal of Heuristics, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lin, C., Qing, A., Feng, Q.
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The case-crossover study design in pharmacoepidemiology

Statistical Methods in Medical Research, 2009
In the study of the association of transient drug exposures with acute outcomes, the case-crossover design is an efficient alternative to the case-control approach. This design based exclusively on the case series uses within-subject comparisons of drug exposures over time to estimate the rate ratio of the outcome associated with the drug under study ...
Joseph A 'Chris', Delaney, Samy, Suissa
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A crossover study of triptorelin and leuprorelin acetate

Fertility and Sterility, 2000
To compare the potency, side effects, and duration of action of triptorelin and leuprorelin acetate after i.m. injections.Prospective, double-blind crossover clinical study.A teaching hospital.Fifty-four patients with pelvic endometriosis.Twenty-seven patients had three doses of i.m. triptorelin (3.75 mg) followed by three doses of i.m.
T K, Cheung, K W, Lo, C W, Lam, W, Lau, P K, Lam   +4 more
openaire   +2 more sources

Alcohol and injury. A case-crossover study

Archives of Family Medicine, 1995
To determine whether and to what extent alcohol consumption increases the risk of injury.The case-crossover study is a new research design for assessing rare acute events (such as trauma) in relation to intermittent exposures (such as alcohol use) that have transient effects.
D C, Vinson, N, Mabe, L L, Leonard, J, Alexander, J, Becker, J, Boyer, J, Moll   +6 more
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A Study on the Utility of Parametric Uniform Crossover for Adaptation of Crossover Operator

2012
The parametric uniform crossover is a general form of the uniform crossover operator by which the swapping probability of each locus could be controlled. The swap probability could control the amount of disruption of high order hyper planes. Several variations of selecto-recombinative genetic algorithms are proposed for controlling the swap probability
Farhad Nadi, Ahamad Tajudin Abdul Khader
openaire   +1 more source