TABLE 5.

Comparison of cytokine concentrations in oil workers with different sleep quality scores.

Variables	Non-sleep disorders	Sleep disorders	t	P
IL-2	4.48 ± 1.12	4.11 ± 1.14	3.045	0.003
IL-6	30.52 ± 6.54	32.58 ± 7.21	−2.056	0.040
IL-8	102.31 ± 15.35	101.35 ± 18.50	0.522	0.602
TNF-a	74.12 ± 12.10	76.64 ± 10.50	−2.056	0.040