Reliability and Validity of the Migraine Disability Assessment Scale among Migraine and Tension Type Headache in Iranian Patients

Table 3

Mean MIDAS score by question and overall with test-retest reliability estimates by headache type.

	Visit 1 all patients	Visit 2 all patients	𝑟	Visit 1 migraine patients; (𝑛=207)	Visit 2 migraine patients; (𝑛=156)	𝑟	Visit 1 TTH patients; (𝑛=60)	Visit 2 TTH patients; (𝑛=49)	𝑟
Q1	2.99±0.48	3.33±0.54	0.62**	3.05±0.48	3.86±0.67	0.63**	2.50±0.87	1.43±0.63	0.58**
Q2	6.42±0.81	5.79±0.67	0.64**	6.53±0.83	5.91±0.78	0.68**	6.51±1.79	5.32±1.26	0.52**
Q3	6.86±0.71	6.72±0.71	0.59**	7.80±0.79	6.88±0.81	0.62**	6.38±1.52	6.13±1.56	0.47**
Q4	9.63±0.95	8.40±0.77	0.61**	9.33±0.90	8.12±0.81	0.52**	14.45±2.85	9.5±2.03	0.85**
Q5	7.32±0.82	7.06±0.78	0.54**	8.38±0.99	6.74±0.81	0.51**	7.16±1.60	8.32±2.10	0.58**
Total MIDAS score	32.56±2.58	30.82±2.54	0.71**	35.30±3.15	31.19±2.84	0.68**	36.27±5.98	29.40±5.67	0.85**

Q: question; TTH: tension type headache; M: migraine; data are given as Spearman correlation coefficient; **𝑃<0.001; each value is mean ± SE.