Popular epidemiology revisited

Article Abstract:

Popular epidemiology has come to mean both the appropriation of expert information on environmental and technological hazards by citizens and the mobilization of citizens against the hazards. The process popular epidemiology often follows begins with citizen observation of common health problems and moves through identifying the potential cause, researching the cause, mobilizing the community and government to respond, filing law suits and finally to citizen watchdog organizations. These citizen responses are due to a sense that environmentally induced diseases are being ignored.

Social aspects, Environmental health, Political participation, Epidemiology, Environmentally induced diseases, Environmental illness

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A comparison of the U.S. Census Summary Tape Files 1A and 3A in measuring residential segregation

Article Abstract:

U.S. Census Summary Tape File 1A, containing data for the whole population, is a better tool for measuring residential segregation between the white majority and the racial minority than Summary Tape File 3A, which contains data for a sample of the 1990 census. Researchers conducting studies on the extent of segregation rely highly on summary tape files and a good choice can make a lot of difference in the indexes. The localized population of some ethnic groups could not adequately be reflected by Tape File 3A, skewing some results and showing the importance of choice of files.

Management, Reports, Statistics, United States. Bureau of the Census, Census, Censuses, Housing discrimination, Segregation

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Measuring industry concentration, diversity, and innovation in popular music

Article Abstract:

An analysis of the relationship between product variety and market concentration in the sound recording industry from the 1955-1988 period shows that greater competition promotes product innovation. The study used the conventional four-firm concentration ratio for measuring market concentration and the number of records that reach the Top 10 of the weekly pop Billboard chart for measuring diversity. Regression analysis of these measures shows that the relationship between industry concentration and innovation is linear.

Research, Innovations, Measurement, Sound recording industry, Recording industry, Diversification in industry, Industrial diversification, Popular music, Industrial concentration

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