The headache under-response to treatment (HURT) questionnaire, an outcome measure to guide follow-up in primary care: development, psychometric evaluation and assessment of utility

Table 4 Estimated factor scores for episodic migraine sub-sample versus headache on ≥15 days/month sub-sample

Source	DF	Type III sum of squares	Mean square	F	Pr > F
Migraine	1	0.5951	0.5951	0.78	0.3763
Effect	1	0.1050	0.1050	0.14	0.7101
Migraine*Effect	1	0.1579	0.1579	0.21	0.6486

ISSN: 1129-2377