TABLE 1.

Sociodemographic data for chronic tension-type headache (CTTH) and healthy control (HC) groups

	CTTH (n=56)	HC (n=42)	Test value‡
Age, years	45.5±13.4	41.0±10.5	1.92§
Male sex, %	19±34	18±43	0.81§
Headache characteristics*
Intensity (0–5)	2.20±0.59	–	–
Frequency (number of days of headache)	10.0±3.5	–	–
Duration, h	7.62±5.3	–	–
Stress†	16.5±8.2	13.4±9.1	1.76§
Anxiety†	7.7±7.3	7.7±7.7	0.01§
Depression†	9.4±7.9	8.5±8.9	0.48§

Data presented as mean ± SD unless otherwise indicated.

^*Headache activity from two-week headache diary;

^†Depression Anxiety Symptom Scale;

^‡t test, df=96, except sex (χ² test, df=1);

^§P>0.05, two tailed