نتایج جستجو برای: wald test
تعداد نتایج: 813470 فیلتر نتایج به سال:
Pricing-to-market (PTM) theory suggests that monopolistic firms which export adjust their destination-specific markups in reaction to exchange rate shocks. These adjustments limit changes in the price of their exports. Thus, important movements in the bilateral nominal exchange rate between two countries that trade are not necessarily fully reflected in the price of imports. Evidence in favour ...
No previous study has evaluated systematically the relationship between metabolic syndrome (MetS) and prostate-related symptoms and signs in young infertile men. We studied 171 (36.5 ± 8.3-years-old) males of infertile couples. MetS was defined based on the National Cholesterol Education Program Third Adult Treatment Panel. All men underwent hormonal (including total testosterone (TT) and insul...
چکیده ندارد.
In a pilot study of 120 children with reading disabilities, we assessed the presence of linkage and association between the DRD2/Taql and the DRD4/48bp-repeat polymorphisms and quantitative measures of behavioral problems derived from parental rated Child Behavior Checklist (CBCL) [Achenbach, T. M. (1991). TM Manual for the CBCL 14-18. Burlington, VT: University of Vermont]. Analyses included m...
This paper discusses power and sample-size computation for likelihood ratio and Wald testing of the significance of covariate effects in latent class models. For both tests, asymptotic distributions can be used; that is, the test statistic can be assumed to follow a central Chi-square under the null hypothesis and a non-central Chi-square under the alternative hypothesis. Power or sample-size c...
BACKGROUND Integrin αvβ6 promotes migration, invasion, and survival of cancer cells; however, the relevance and role of αvβ6 has yet to be elucidated in breast cancer. METHODS Protein expression of integrin subunit beta6 (β6) was measured in breast cancers by immunohistochemistry (n > 2000) and ITGB6 mRNA expression measured in the Molecular Taxonomy of Breast Cancer International Consortium ...
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