Comput Math Methods Med - The prevalence of asthma and declared asthma in Poland on the basis of ECAP survey using correspondence analysis.

Tópicos

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Resumo

Results of epidemiological and public health surveys are often presented in the form of cross-classification tables. It is sometimes difficult to analyze data described in this way and to understand relations between variables. Graphical methods such as correspondence analysis are more convenient and useful. Our paper describes an application of correspondence analysis to epidemiological research. We apply the basic concepts of correspondence analysis like profiles, chi-square distance to medical data concerning prevalence of asthma. We aim at describing the relationship between asthma, region, and age. The data presented in this paper come from Epidemiology of Allergy in Poland (ECAP) survey in years 2006-2008. Correspondence analysis shows that there is a fundamental difference in the structure of age groups for people with symptoms compared to those who have declared asthma (regardless of the level of symptoms of asthma and the level of declaration). The variable which best differentiates declared asthma in all regions is "wheezing and whistling." Correspondence analysis also shows significant differences between locations. Our analyses are performed in the R package "ca".

Resumo Limpo

result epidemiolog public health survey often present form crossclassif tabl sometim difficult analyz data describ way understand relat variabl graphic method correspond analysi conveni use paper describ applic correspond analysi epidemiolog research appli basic concept correspond analysi like profil chisquar distanc medic data concern preval asthma aim describ relationship asthma region age data present paper come epidemiolog allergi poland ecap survey year correspond analysi show fundament differ structur age group peopl symptom compar declar asthma regardless level symptom asthma level declar variabl best differenti declar asthma region wheez whistl correspond analysi also show signific differ locat analys perform r packag ca

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