A Study on Multi Stages of Diabetic Retinopathy among Diabetic Patients in Puducherry - Using Markov Chain Model Approach
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چکیده
Objective: To find the various stages of DR by using Markov chain analysis approach and to find the transition of DR. Methods: Study Design: retrospective study. Study Population: Type 2 diabetics patients. Study Period: May – June 2012. Study tool: Pre-designed and pre-tested questionnaire was used. Study Variables: Stages of Diabetic Retinopathy. Study Subjects: 200 Patients with various stages of DR were included in this study. Study Method: Various stages of DR patients were collected in January 2011 and the stages of the same patients in the year January 2012. Software used: MS Excel 2007 for data entry and for analysis SPSS 16.0 version was used. Statistical Analysis: Markov Chain Model approach was used to find out the transition of DR. Results: Out of 200 patients, 126 (63%) were male and 74 (37%) female. The diabetes patients who had type II diabetes for at least five years, a mean age of 58.80 ± 10.53 years and ranged in the age from 27 to 91 years. In one year transition, the probability of an individual in grade-I to move to grade-II is 0.82 which is very high. In the case of the Transition Probability Matrix (TPM) after a period of 5 years it is observed that, the chance of moving from the other lower grades to the final grade is also fairly high. Conclusion: In future, to study the transition of diabetic retinopathy should consider a matrix of estimated transition probabilities, 50 V. Senthilvel et al depending on the population, to judge probabilities of transition between states of retinopathy, for the two groups taken up for study and comparison.
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تاریخ انتشار 2012