RT Journal Article SR Electronic T1 Validation of the Japan Coma Scale for the prediction of mortality in children: analysis of a nationwide trauma database JF World Journal of Pediatric Surgery JO World Jnl Ped Surgery FD BMJ Publishing Group Ltd SP e000350 DO 10.1136/wjps-2021-000350 VO 5 IS 2 A1 Enomoto, Yuki A1 Tsutsumi, Yusuke A1 Tsuchiya, Asuka A1 Kido, Takahiro A1 Ishigami, Koji A1 Togo, Masahito A1 Yasuda, Susumu A1 Inoue, Yoshiaki YR 2022 UL http://wjps.bmj.com/content/5/2/e000350.abstract AB Objective The Japan Coma Scale (JCS) is widely used in clinical practice to evaluate levels of consciousness in Japan. There have been several studies on the usefulness of JCS in adults. However, its usefulness in evaluating children has not been reported. Therefore, this study aimed to assess the usefulness of the JCS for the prediction of mortality in children.Methods This is a multicenter cohort study which used data from a national trauma registry (Japan Trauma Data Bank). This study included patients under 16 years of age who were treated between 2004 and 2015.The primary outcome measure was in-hospital mortality. Two models were used to examine each item of the Glasgow Coma Scale (GCS) and the JCS. Model A included the discrete levels of each index. In model B, data regarding age, sex, vital signs on arrival to hospital, the Injury Severity Score, and blunt trauma were added to each index. The effectivity of the JCS score was then evaluated using the area under the curve (AUC) for discrimination, a calibration plot, and the Hosmer-Lemeshow test for calibration.Results A total of 9045 patients were identified. The AUCs of the GCS and JCS were 0.929 (95% confidence interval (CI) 0.904 to 0.954) and 0.930 (95% CI 0.906 to 0.954) in model A and 0.975 (95% CI 0.963 to 0.987) and 0.974 (95% CI 0.963 to 0.985) in model B, respectively. The results of the Hosmer-Lemeshow test were 0.00 (p=1.00) and 0.00 (p=1.00) in model A and 4.14 (p=0.84) and 8.55 (p=0.38) in model B for the GCS and JCS, respectively.Conclusions We demonstrated that the JCS is as valid as the GCS for predicting mortality. The findings of this study indicate that the JCS is a useful and relevant tool for pediatric trauma care and future research.Data may be obtained from a third party and are not publicly available. Data supporting the findings of this study are available from Japan Trauma Data Bank (JTDB), but there are restrictions on the use of these data. These data were used under license for this study and are therefore not available to the public. However, upon reasonable request, the data may be obtained with the permission of JTDB.