The effectiveness of modified stone recurrence predictive score in predicting recurrence of urinary stone disease

Abstract

Aims: The present study is intended to define the scoring system consisting of questions to be answered by the patients in an outpatient clinic setting in order to predict recurrence of urinary system stone disease. Methods: Two hundred patients who were admitted for urinary system stone treatment in our clinic between 2016 and 2017 were included in the study. A Modified Stone Recurrence Predictive Score (MSRPS) comprising 23 questions under 14 headings including risk factors such as age, gender, smoking and alcohol consumption, family history of stone, number of stones, additional diseases and medications, presence of urinary tract infection, dietary characteristics, stress factors, occupation, and obesity was created. Three-year follow-up data of all patients were recorded. Results: The mean MSRPS was 18.4±6.2 (6-35). We noted that the high Modified Stone Recurrence Predictive Score correlated significantly with the incidence of recurrent stone formation (p<0.001 r2: 0.923). When the cutoff value was considered as 18, the sensitivity was 89.4% and the specificity was 93.1% in predicting recurrent stones. Recurrent stone formation was observed within 3 years in all patients with an MSRPS value of 26 and above. Conclusion: Thanks to this scoring system developed by expanding the scope of similar studies conducted in previous years, the possibility of recurrence of urinary stone disease is predicted using a questionnaire that can be filled easily, and it would be an appropriate choice regarding both patient health and cost-effectiveness in terms of directing patients to metabolic analyses or recommending preventive measures.