Table 4

- Threshold value for ONSD values for the development of headache (ROC curve analysis).

THV	AUC	95% CI		p-value	Sen	Spe	PPV	NPV
THV	AUC	Lower limit	Upper limit	p-value	Sen	Spe	PPV	NPV
5.3	0.830	0.761	0.899	<0.001	87.5	71.9	50.9	94.5

THV, threshold value; AUC, area under the curve; CI, confidence interval; Sen, sensitivity, Spe, Specificity; PPV, positive predictive value; NPV, negative predictive value.