Evaluation of sensitivity and the specificity of Canadian CT head rule and New Orleans criteria in patients with head injury
Nasim Chobdari, Mohammad Davood Sharifi, Behrang Rezvani Kakhki, Sara Shamsaei, Hamideh Feiz Disfani, Amir Masoud Hashemian
Abstract
Background
Millions of people around the world are annually under emergency investigation due to severe head injuries. Computed tomography (CT) scans is a diagnostic procedure that can be done for most people.
Aims
This study is aimed to evaluate the sensitivity and the specificity of Canadian and New Orleans criteria in determining the rate of head injury.
Methods
To obtain the relationship between clinical symptoms and CT scan results, the required information was obtained by filling out the records and physical examination in the emergency department and the results from the patients were statistically analysed. Data needed to complete the questionnaire was collected from patient, the patient, their concomitant examination, and the information in their medical records. The raw data from the questionnaire was analysed using SPSS version 17 software. In this study, after obtaining the CT scan results, the individuals were classified into two clinical criteria, New Orleans and Canadian, and their sensitivity and specificity were analysed using ROC curve analysis.
Results
ROC curve analysis data showed that the sensitivity and specificity of New Orleans criteria are 31 per cent and 69 per cent, respectively, and the sensitivity and specificity of Canadian criteria are 76 per cent and 74 per cent, respectively. Data shows that the Canadian curve has a significant difference compared to basic state (P-Value < 0.05).
Conclusion
Despite abnormal CT scan results in patients with head trauma, there is a significant relationship between headache and a combination of symptoms in patients. The results can be used in decision-making on involved in performing a CT scan. ROC curve analysis also showed that the Canadian criterion has higher sensitivity and specificity for the diagnosis of severe head trauma compared to New Orleans criteria.
Full Text:
Millions of people around the world are annually under emergency investigation due to severe head injuries. Computed tomography (CT) scans is a diagnostic procedure that can be done for most people.
Aims
This study is aimed to evaluate the sensitivity and the specificity of Canadian and New Orleans criteria in determining the rate of head injury.
Methods
To obtain the relationship between clinical symptoms and CT scan results, the required information was obtained by filling out the records and physical examination in the emergency department and the results from the patients were statistically analysed. Data needed to complete the questionnaire was collected from patient, the patient, their concomitant examination, and the information in their medical records. The raw data from the questionnaire was analysed using SPSS version 17 software. In this study, after obtaining the CT scan results, the individuals were classified into two clinical criteria, New Orleans and Canadian, and their sensitivity and specificity were analysed using ROC curve analysis.
Results
ROC curve analysis data showed that the sensitivity and specificity of New Orleans criteria are 31 per cent and 69 per cent, respectively, and the sensitivity and specificity of Canadian criteria are 76 per cent and 74 per cent, respectively. Data shows that the Canadian curve has a significant difference compared to basic state (P-Value < 0.05).
Conclusion
Despite abnormal CT scan results in patients with head trauma, there is a significant relationship between headache and a combination of symptoms in patients. The results can be used in decision-making on involved in performing a CT scan. ROC curve analysis also showed that the Canadian criterion has higher sensitivity and specificity for the diagnosis of severe head trauma compared to New Orleans criteria.
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