To assess the effectiveness of medical technologies and determine the power and direction of their effect on the public health indicators, the research was conducted to study the immunization rate of children and measles incidence rate by district. What method of statistical analysis should be applied in this case?

Answer options

1. Calculation of standardized ratio
2. Calculation of morbidity index among the nonvaccinated
3. Calculation of coefficient of agreement
4. Calculation of correlation coefficient
5. Calculation of statistical significance of the difference between two estimates

Explanation

To assess the effectiveness of medical technologies and determine the power and direction of their effect on the public health indicators, the research was conducted to study the immunization rate of children and measles incidence rate by district. What method of statistical analysis should be applied in this case?The correlation coefficient, denoted by r, is a measure of the strength of the straight-line or linear relationship between two variables. … +1 indicates a perfect positive linear relationship: as one variable increases in its values, the other variable also increases in its values via an exact linear rule.