This work is on the use of data extraction and processing techniques in extracting data from medical dataset for analysis was done using data mining technique and provides useful tips and procedures for an easier process of obtaining needed data from large dataset such as medical records. Statistical analysis using ANOVA was done at the 5% significance level which indicated a high significance in the infection level for different states investigated. The system of extraction has common problems (challenges) and handlings in the various states were carefully studied for the dataset. Findings will be of great assist to health organizations in making informed and concise decisions. Recommendations were proffered which include among others, the following, that the fact that existing classification of medical data should be improved upon.

Keywords : Medical data, Extraction, Processing, Mining, Dataset.