Table 3.

Data for traumatic brain injury (TBI) and the control groups.

	TBI	Control	P-Value	Test Value	df	Method
Sleep disorders (No. of patients)	45 (72.6%)	39 (24.7%)	P ˂ 0.0001	43.278 χ2 value		Chi-square
Sleep hours/day *	7. 94± 1.07	7.26 ± 0.58	P ˂ 0.0001	4.72 t value	218	t-test
Sleep latency (min) *	13.22 ± 3.16	13.93 ± 3.07	P 0.131	1.517 t value	218	t-test

* mean ± standard deviation.