Research And Practice Of Statistical Analysis In Disease Monitoring

In 2002, the National Committee for Vital and Health Statistics gave the definition of the health statistics: Health Statistics is numerical data that characterize the health of a population and include actions that affect the health of population. The health statistics is lies between the healthy data and the hygienic information. The healthy data refers to obtain about the health actual observation value in one time, like actual age of observation objects (observation value) and distribution of statistical age. The meaning of the health information is broader, refers to the quota and the qualitative observation value which is processing or not, the historic record, related event of individual or community, for instance, age of somebody, community's age distribution, influence of the aging to the health, the record of sick and treatment about the senior citizen and so on. In order to explicit discrimination health statistics, the healthy information and the hygienic information, you must hold three characteristics of the health statistics: Quantitative, Derivation data, Description to community health and correlation factor.The function of hygienic statistics mainly is:(1) To provide the elementary knowledge about community (subgroup body) health, the factor which influence health correlation and the interaction between them.(2) To provide the information supporting for national and regional health plan, the policy making, detection and assessment.(3) To provide the information for the promotion project of community health and the intervention implementation, the goal hypothesis, the assessment and the optimization provide the information, simultaneously instructs individual the health care way and the clinical decision-making.As hygienic statistics is vital for clinical practiceand laboratory studies , medical systems always have special hygienic statistics software package . This Statistical Analysis system in Disease Monitoring is developed according to the actual demand of division of medical affairs in Jilin University, including Chi-square test, Rank sum test, Regression and Correlation analysis and other modules.Chi-square test is a kind of hypothesis testing which is used widely. It can be determined whether there is difference between two or among more overall the rate; if variations have correlations. Rank sum test is a kind of complete system which tests in high efficiency. When you don't know the sample whether or not comes from the overall distribution or knows the population distribution and request examination center condition which is not symbol time needs to use the non-parametric test.Regression and correlation analysis are used to analyze the relations of variables, like the age and the blood pressure, the medicine dosage and the mortality rate of animal, the concentration of contaminant in environment and the distance from the pollution source and so on. These all belongs to analyzing the category weighing out to analyzing the category.Statistical Analysis system in Disease Monitoring is developed by C sharp on .NET, which is layered architecture and has advantages ,such as easily use, generality and expansibility. Requirement analysis of Statistical Analysis system in Disease Monitoring is based on software engineering. Realization processes and data flow are introduced. All the work done is as following:(1)requirement analysis of Statistical Analysis system in Disease Monitoring is based on software engineering .It is concluded that the function of the system, for example, description of statistic, distribution theory(normal distribution, binomial distribution, Poisson distribution) ,estimation of general parameters(total divided, population rate, population means), hypothesis testing(t test ,u test, variance analysis ,Chi-square test, rank sum test), Regression and correlation analysis, multiple linear regression,logistic regression, experimental design, survey design.The system can provide satisfied results;(2)The system is designed according to above-mentioned requirement , including module construction design , function design and database design. Compared with other software architectures, layer architecture is used. The system is divided into four layers in logic; the first layer is user interface, which is a interface between user and system and can be used as users'choice; the second layer is the data logic layer, which can process the message and transform the type and logic of data from user interface; the third layer is data processing layer, which is the core of the whole system and processes the data from user; the forth layer is database layer. It is designed that the operation of the main module of the system in function design, which servers better to the division of medical affairs in Jilin University and other researchers. Compared with other database technologies, SQL Server2000 is used. The functions of all tables in database are described.(3)Realization of the Statistical Analysis system in Disease Monitoring includes the design of user's interface, realization of the background and realization of database. It is shows how to make the interface in design, how to made user understand the system work, and the function of the table in database. Through introduce the module of the Chi-square test, it is shows the system in work style and develop flow. At last ,the test flow is showed, include unit test, integration test , validation testing and system test,and let division of medical affairs in Jilin University test theβtest.finish the whole develop.In brief, the statistical analysis system in disease monitored design to be reasonable, completes the basic health statistics method, the realization function has conformed to the medicine worker's use demand, usability. It will provide good and the comprehensive effective service for them.