Diagnostic accuracy of Gorelick 10 point scale in comparison to IMCI scale in identifying significant dehydration in South Indian children? - A prospective observational study

Abstract

Background: Unavoidable cause of mortality among under 5 children in India is dehydration resulting from acute diarrhoeal diseases. In spite of various dehydration scales available across the world, the most commonly used dehydration scale in India is IMCI.Gorelick 10 point scale having more clinical indicators could also be considered using if the diagnostic accuracy of the scale in identifying the significant dehydration is in par with that of IMCI scale. Our Objective was to classify the 1month - 60 month aged children admitted with diarrhoeal disease based on dehydration assessment using Body weight, Gorelick 10 point scale, IMCI scale and to compare the diagnostic accuracy of Gorelick 10 point scale vs IMCI scale in identifying significant dehydration. Methods: The prospective observational study was done among 224 , 1 month to 60 month aged children admitted with acute watery diarrhea. The children were assessed for severity of dehydration using Body weight, Gorelick 10 point scale, IMCI scale. The diagnostic accuracy of Gorelick 10 point scale vs IMCI scale in identifying significant dehydration was assessed using statistical methods like, Sensitivity, Specificity, Positive Predictive Value PPV,NPV,LR+, LR-, Youden index and accuracy and Kappa statistic to detect inter-rater reliability. Results: The proportion of participants classified as to have no dehydration, some dehydration and severe dehydration according to Gorelick 10 point scale, IMCI and percentage of weight loss was 79.9%, 18.8%, 1.3% vs 77.7%,21%,1.3% vs 79.9%,18.8%,1.3% respectively The diagnostic accuracy of IMCI scale in identifying Significant dehydration was higher than Gorelick 10 point scale, as noted by having Sensitivity, Specificity,PPV,NPV,LR+,LR-,Youden index and accuracy as 100%,97.2%,0%,100%35.8,0,0.97,97.7% vs 88.9%,97.2%,88.2%,97.2%,31.8,0.11,0.85,95.5% respectively and k value was 0.9. Conclusion: Though the diagnostic accuracy of IMCI was little higher than Gorelick 10 point scale in identifying significant dehydration, having obtained k value of 0.9, indicates posing an excellent agreement Gorelick 10 point scale can be used in place of IMCI to identify Significant dehydration.

Keywords

• dehydration
• diarrhoea
• weight loss