Fig. 3

A and B. The receiver operating characteristics (ROC) curves of risk factors for detecting children with abnormal blinking. Notes: A: ROC curves of VDTt and OPI showed that the AUC values were 0.885 and 0.664, respectively (P<0.001, P=0.008). The sensitivity and specificity were 93.2% and 81.4%; 90.9% and 37.2%, respectively in boys. B: ROC curves of VDTt and OPI showed that the AUC values were 0.783 and 0.704, respectively (P<0.001, P=0.002). The sensitivity and specificity were 72.5% and 85.0%; 67.5% and 67.5%, respectively in girls. Abbreviations: VDTt, video display terminal time; OPI, ocular protection index; AUC, area under the curve (C) and (D). The receiver operating characteristics (ROC) curves for factors associated with prolonged use of VDT in children. Notes: C: ROC curves of AVG showed that the AUC value was 0.962 (P<0.001). The sensitivity and specificity were 81.6% and 98.0%, respectively in boys. D: ROC curves of AVG showed that the AUC value was 0.972 (P<0.001). The sensitivity and specificity were 100% and 82.9%, respectively in girls. Abbreviation: AVG, the average of tear film lipid layer thickness; AUC, area under the curve