The global burden of headache in children and adolescents – developing a questionnaire and methodology for a global study

Table 1 Diagnostic accuracy of the first and second versions of the Child/Adolescent HARDSHIP questionnaire for diagnosing migraine and tension-type headache according to ICHD-2

Questionnaire, version 1.0		Sensitivity	Specificity	PPV	NPV
Migraine		0.63	0.73	0.67	0.70
TTH		0.52	0.93	0.85	0.71
Questionnaire, version 2.0
Migraine	All	0.71	0.76	0.76	0.71
	Children	0.75	0.63	0.71	0.68
	Adolescents	0.69	0.79	0.82	0.74
TTH	All	0.61	0.85	0.78	0.72
	Children	0.55	0.77	0.55	0.77
	Adolescents	0.63	0.93	0.91	0.68

ISSN: 1129-2377