Common epidemiologic study types

Types of Epidemiologic Studies

Common Types of Radiation

This section introduces some of the basic concepts of radioactivity. It is designed to provide the general reader with an overall understanding of the radiological sections of this report. A discussion of the analyses used to quantify radioactive material, the common sources of radioactivity in the environment, and how each contributes to an individual’s radiation dose are provided. Some genera...

Common Nouns as Types

When modern type theories are employed for formal semantics, common nouns (CNs) are interpreted as types, not as predicates. Although this brings about some technical advantages, it is worthwhile to ask: what is special about CNs that merits them to be interpreted as types? We discuss the observation made by Geach that, unlike other lexical categories, CNs have criteria of identity, a component...

Detecting common elements of types

We describe an algorithm approximating the following question: Given two types t1 and t2, are there instances σ(t1) and σ(t2) denoting a common element? By answering this question we solve a main problem towards a type checking algorithm for non-disjoint types that raises an error just for function calls that cannot be executed successfully. For dynamically typed functional languages such a typ...

Sex-differences in lung cancer cell-types? An epidemiologic study in Ireland

OBJECTIVE This study assesses the epidemiological pattern of lung cancer cell-types in Ireland, with identification of any underlying gender variations. METHODS Lung cancer incidence data, including the major cell-types: squamous-cell-carcinoma (SCC), adenocarcinoma (AC), small-cell-lung-carcinoma (SCLC) and large-cell-carcinoma (LCC) were obtained from the national cancer registry (1994-2000...