The objective of this study was to demonstrate the causes, optimal definition, and predictive value of exercise-induced hypotension occurring during treadmill testing. This study included all patients referred for clinical reasons to the Long Beach Veterans Administration Medical Center treadmill laboratory and then followed for a 2-year period for cardiac events. The population consisted of 2,...

Objective: To measure the validity of self reported safety practices from a questionnaire, completed by families participating in a home safety randomised controlled trial. Methods: The postal questionnaire was used to measure secondary outcomes in a randomised controlled trial. The answers to 26 questions that could be assessed by observation were checked by a home visit. Families were invited...

Predictions about the future and unrestricted universal generalizations are never logically implied by our observational evidence, which is limited to particular facts in the present and past. Nevertheless, propositions of these and other kinds are often said to be confirmed by observational evidence. A natural place to begin the study of confirmation theory is to consider what it means to say ...

The British Columbia Center for Disease Control laboratory performs approximately 95% of all hepatitis C virus (HCV) antibody tests for the province's 4 million inhabitants. In 2002, the laboratory tested 96,000 specimens for anti-HCV antibodies, of which 4,800 (5%) were seroreactive and required confirmation of active infection. Although HCV RNA assays with a sensitivity of 50 IU/ml or less ar...

• Elaborate and build upon a growing body of sociological knowledge concerned with cultural resistance and oppositional cultures • Emphasise the significance of human agency in mediating progressive social change • Analyse the innovative ways in which subordinated minority social groups, in this case indigenous Australians, negotiate ‘bi-culturality’, that is, the interface between indigenous c...

Cognitions held about hypnosis have an important impact on areas such as initial rapport and hypnotic-treatment compliance. The Valencia Scale on Attitudes and Beliefs toward Hypnosis may be the first instrument specifically geared to the Spanish-speaking population. Besides measuring these cognitions, the scale can also help evaluate the effect of clinical and experimental manipulations on peo...

UNLABELLED The aim of this study was to determine the prevalence of epilepsy in the urban population of São José do Rio Preto. This is a medium-sized city of 336000 inhabitants, located in the northwest of the state of São Paulo, Brazil. METHOD A cross-sectional epidemiological investigation with a randomized sample was performed in two phases, a screening phase and a confirmation of the diag...

The objective of this study was to demonstrate the causes, optimal definition, and predictive value of exercise-induced hypotension occurring during treadmill testing. This study included all patients referred for clinical reasons to the Long Beach Veterans Administration Medical Center treadmill laboratory and then followed for a 2-year period for cardiac events. The population consisted of 2,...

Confirmation theory is the study of the logic by which scientific hypotheses may be confirmed or disconfirmed (or supported or refuted) by evidence. A specific theory of confirmation is a proposal for such a logic. Presumably the epistemic evaluation of scientific hypotheses should largely depend on their empirical content — on what they say the evidentially accessible parts of the world are li...