Ratio Analysis Technique Research Articles

Demographic characteristics and health behaviours of consenters to medical examination. Results from the Welsh Heart Health Survey.

The aim was to compare the demographic characteristics and health related behaviours of people who consented to a medical examination as part of a population survey with those who did not. The study formed part of the (1985) Welsh Heart Health Survey, which comprised a three stage design involving household interview, self completion questionnaire, and medical examination. Subjects for medical examination were selected from responders to the questionnaire survey (67%). Sixty six per cent of this group consented to medical examination (n = 11,637). Odds ratio analysis techniques were used to compare consenters and non-consenters. The analysis was based on self reported information available from previously completed questionnaires, and from personal interviews. The study supported the findings of previous research indicating that consenters to medical examination are more likely to be from non-manual social groups, to be aged 25-44 years, to be educated beyond school age, and to be married. Individuals with healthy lifestyle characteristics (diet, physical activity) were overrepresented among consenters. The only exception to this finding was in relation to excessive alcohol consumption. These findings emphasise the importance of maximising response rates in all forms of social research including surveys with a clinical component. They also have methodological and analytical implications for the Welsh Heart Health Survey.

Using Ratio Analysis for Financial Accountability

Financial accountability is now a fact of life for nonprofit as well as profit-making organizations. This article describes the useful ratio analysis technique, provides relevant examples, discusses problems and issues, and makes suggestions for needed changes.

Use of Landsat multispectral scanner data for detection and reconnaissance mapping of iron oxide staining in mineral exploration, central East Greenland

Test area; color anomalous hydrothermal alteration associated with stockwork molybdenum mineralization. Tertiary Malmbjerg molybdenum occurrence. Interactive digital image processing system combined with computerized color plots. Special ratio and factor analysis techniques. The best results with ratio techniques are obtained when band 4/band 5 is displayed as cyan (red), band 5/band 7 as magenta (green), and band 6/band 7 as yellow (blue). A characteristic pink to orange color corresponds to areas of limonitic rocks. Using factor analysis, color composites displaying F2 as magenta (green), F3 as cyan (red), and F4 as yellow (blue) with a visually determined color stretch discriminates very effectively with yellow-orange to red-orange colors representing limonitic rocks. More than 50 significant rust zones located. Ratio and factor analysis techniques were applied to reconnaissance mapping of Precambrian metamorphic and Devonian volcanic terrains covering more than 30,000 km 2 of ice-free area in a province of 500 km long by 300 km wide, resulting in the localization of 38 major (surface area > 0.5 km 2 ) rust zones in Precambrian metamorphic terrain.--Modified journal abstract.