نتایج جستجو برای: observational studies

تعداد نتایج: 1500859  

Journal: :Canadian Medical Association Journal 2010

2015
Charlotte Werndl Paul Humphreys

This article focuses on three themes concerning determinism and indeterminism. The first theme is observational equivalence between deterministic and indeterministic models. Here I discuss several results about observational equivalence and present an argument on how to choose between deterministic and indeterministic models involving indirect evidence. The second theme is whether Newtonian phy...

2012
Matthew Shum

In this appendix we consider a procedure to assess quantitatively whether the expressive or strategic voting model is more appropriate for the state supreme court voting data used in this paper. As we remarked in the main text, for a given set of cases, the first-stage likelihood function for the votes is identical for both the expressive and strategic voting models, and in this sense the two m...

2008
Amal Ahmed Derek Dreyer Andreas Rossberg

3 Logical Relation Proofs 15 3.1 Basic Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.1.1 Properties of Step-Indexed Construction . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.1.2 Approximation Yields Valid Semantic Objects . . . . . . . . . . . . . . . . . . . . . . 17 3.1.3 World Extension and Store Satisfaction Properties . . ...

1998
Mitchell Wand

We provide a very simple model of a reeective facility based on the pure-calculus, and we show that its theory of contextual equivalence is trivial: two terms in the language are contextually equivalent ii they are-congruent.

Journal: :international journal of endocrinology and metabolism 0
sikarin upala department of internal medicine, college of physicians and surgeons, bassett medical center and columbia university, new york, usa; department of preventive and social medicine, faculty of medicine siriraj hospital, mahidol university, bangkok, thailand anawin sanguankeo department of internal medicine, college of physicians and surgeons, bassett medical center and columbia university, new york, usa; department of preventive and social medicine, faculty of medicine siriraj hospital, mahidol university, bangkok, thailand; department of internal medicine, bassett medical center, 1 atwell road, cooperstown, new york, usa. tel: +1-6075474805, fax: +1-6075476612 soontharee congrete department of medicine, st. elizabeth's medical center, boston, massachusetts, usa

data extraction primary outcomes were incidence, prevalence, or odds ratio of having osteoporosis, defined as bone mineral density t-score < -2.5 sd. results of 353 articles, 344 articles were excluded, 9 underwent full-length review and data were extracted from 7 studies consisting of 113,558 patients. finally, 3 extracted studies were included in the meta-analysis of osteoporosis. among cohor...

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