Table 1

Thickness millimeter	Control patients		Total [Male +female] bone thickness N=104	Tension headache		Total [Male +female] bone thickness N=105	P value between totals of both groups
Thickness millimeter	Male N=55	Female N=49	Total [Male +female] bone thickness N=104	Male N=46	Female N=59	Total [Male +female] bone thickness N=105	P value between totals of both groups
Occipital bone mean [standard deviation ]	1.0121 [0.25219]	0.92250 [0.28955]	0.95714 [0.27575]	1.2100 [0.26437	1.0125 [0.23278]	1.1042 [0.25761	The two-tailed P value is less than 0.0001 t = 3.9844 df = 207
Temporal bone mean [standard deviation ]	0.6000 [0.17638]	0.4750 [0.067566]	0.53750 [0.13934]	0.72424 [0.29158]	0.4750[0.067566]	0.72540 [0.28623]	The two-tailed P value is less than 0.0001 t = 6.0247 df = 207
P valueOccipital /temporal bone			P value is less than 0.0001			P value is less than 0.0001
Mean of Age	49.939	41.881	46.047	52.400	52.400	49.250

N = number of patients t = t test df = degree of freedom

Table 1: The mean and standard deviation of occipital and temporal bone thickness in the tension headache group and control groups.