The diagnostic accuracy of Lintula, RIPASA and Alvarado scoring systems for diagnosis of acute appendicitis
Keywords:
Acute appendicitis, Lintula, RIPASA, Alvarado scoreAbstract
Introduction : The acute appendicitis is a common surgical condition that was found in the emergency department. The rapid and accurate diagnosis will reduce complications and costs. Therefore, the scoring systems were developed to determine the diagnostic aids. Firstly, Lintula score is based on patients' past medical history and physical examination. Secondly, RIPASA score which is well-designed for the diagnosis among the Asian patients. While, Alvarado score was evaluated and validated in numerous studies; however, it lacks creditability among the Asian patients
Objectives : To study the diagnostic accuracy of Lintula, RIPASA and Alvarado scoring systems in the diagnosis of acute appendicitis
Method : The Prospective Cohort Study. We analyzed the data by STATA version 15.0 from 66 adult patients who visited the Emergency department at Chonburi hospital having right lower quadrant abdominal pain between 30th July - 31st December 2020. Lintula (z21), RIPASA (z7.5) and Alvarado scores (27) were compared. Then we calculated the sensitivity, specificity, PPV, NPV and AUROC curves.
Results : The sensitivity, specificity, PPV and NPV of Lintula score (221) were respectively 45.7%, 75%, 80.8% and 37.5%. However, Lintula score (z17) were 80.4%, 55%, 80.4% and 55%. RIPASA score (=7.5) were 84.8%, 45%, 78% and 56.2%. Alvarado score (z7) were 71.7%, 50%, 76.7% and 43.5%. AUROC of RIPASA, Lintula and Alvarado scores were 0.685, 0.678 and 0.656
Conclusion : Lintula, RIPASA and ALVARADO score provide similar results for diagnosis acute appendicitis. Followed by Lintula and Alvarado score. Lintula score (217) sensitivity becomes higher than Lintula score (221).
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