Table 2. The mean serum levels of inflammatory modulating cytokines for age subgroups of the participants .

Age groups		Control (n = 50)	Case (n = 50)	Total (n = 100)	P -value
65 to 75 years	TNF-α (pg/mL)	599.70 ± 89.68	521.06 ± 19.78	561.56 ± 82.40	< 0.001
	IL-1 (pg/mL)	435.50 ± 50.32	326.06 ± 28.13	383.95 ± 75.07	< 0.001
	IL-6 (pg/mL)	412.80 ± 63.55	296.81 ± 44.35	365.98 ± 84.57	< 0.001
76 to 85 years	TNF-α (pg/mL)	636.71 ± 87.93	481.75 ± 54.75	560.32 ± 84.67	< 0.001
	IL-1 (pg/mL)	428.71 ± 61.82	328.70 ± 63.05	371.51 ± 62.78	< 0.001
	IL-6 (pg/mL)	468.75 ± 41.75	312.65 ± 51.25	353.86 ± 50.13	< 0.001
86 to 95 years	TNF-α (pg/mL)	708.44 ± 111.96	495.64 ± 51.64	577.33 ± 108.83	< 0.001
	IL-1 (pg/mL)	439.69 ± 54.64	268.86 ± 48.43	365.37 ± 53.10	< 0.001
	IL-6 (pg/mL)	469.25 ± 53.51	288.14 ± 40.87	369.25 ± 52.46	< 0.001

TNF-α: tumor necrosis factor alpha; IL-1: interleukin 1; IL-6: interleukin 6