This project is a simple data analysis of the effect of the Doppler ultrasound in predicting malignant thyroid nodules.
The data is given in MS- 15-9- HALO, NAMES AGE DITED.xlsx. It contains 134 observations and 20 variables. The dependent variable is "FINAL.DIAGNOSIS".
The results of the data analysis is given in the pdf file : output(4).pdf
The main steps in the analysis was Sensitivity and Specificity analysis of the variables, Association analysis of variables and the dependent variable through Cross tabulation and Chi-square and finally a logistic regression model.
All of the analysis was carried out in R. The code is given in the file MS_code.R
It was found that the variable Resistive Index (RI) is quite a powerful indicator of malignancy.