CONTEXT AND OBJECTIVE Stroke is a relevant issue within public health and requires epidemiological surveillance tools. The aim here was to validate a questionnaire for evaluating individuals with stroke symptoms in the Stroke Morbidity and Mortality Study (Estudo de Mortalidade e Morbidade do Acidente Vascular Cerebral, EMMA), São Paulo, Brazil. DESIGN AND SETTING This was a cross-sectional s...

OBJECTIVE--Research into the health of minority ethnic groups is often restricted by methodological difficulties. These include the lack of accurate population denominators, the choice of an appropriate sampling frame, correctly assigning ethnic group, and biases in techniques used for sampling and investigation. This article reviews the available sources or mortality and morbidity data, and as...

BACKGROUND Large-scale mental health surveys have provided invaluable information regarding the prevalence of specific mental disorders and service use for mental health reasons. Unfortunately, because vast surveys conducted face to face are very costly, many countries and provinces do not embark upon this path of research, thus depriving themselves of a rich source of data useful for service p...

The aims of this article are to provide an up-to-date review of the methodological features and substantive results of published epidemiological surveys of the prevalence of pervasive developmental disorders (PDD). This article updates previous reviews (1, 2) with the inclusion of new studies made available since then. The specific questions addressed inthis article are: a) how are cases of PDD...

The development of nutrition and health guidelines and policies requires reliable scientific information. Unfortunately, theoretical considerations and empirical evidence indicate that a large percentage of science-based claims rely on studies that fail to replicate. The session "Strategies to Optimize the Impact of Nutrition Surveys and Epidemiological Studies" focused on the elements of desig...

Certain aspects of drug abuse have been presented from the pooled data of psychiatric epidemiological surveys conducted by the authors in the rural areas of West Bengal.

Response rates in epidemiological studies have generally been decreasing over the past decades. However, when target group consists of adolescents and young adults, school-based surveys hi...

upper gastrointestinal bleeding (ugib) is defi ned as bleeding that results from lesions located above the ligament of treitz and is a common cause for emergency hospital admissions in patients with gastrointestinal disorders. ugib also increases the risk of morbidity and mortality in patients already hospitalized for other reasons. according to epidemiological surveys of acute ugib in iran, pe...