Table 6. The Partial Correlation Adjusted for Age between Cognitive Tests and Other Parameters. Significance Level was Considered as P<0.05.

MMSE	CDR	ADAS-cog	NPI-severity	NPI-caregiver distress
r	P-value	r	P-value	r	P-value	r	P-value	r	P-value
Aβ 40	-0.185	0.266	0.122	0.476	0.167	0.317	0.399	0.026*	0.4	0.026*
TNF-α	-0.27	0.106	0.416	0.013*	0.236	0.161	-0.29	0.12	-0.338	0.068
IL-1α	-0.124	0.458	-0.076	0.651	0.386	0.017*	-0.095	0.61	-0.15	0.419
TNF-α/ IL-10 ratio	-0.35	0.037*	0.077	0.657	0.091	0.599	-0.082	0.672	-0.114	0.556
PGE2	-0.405	0.012*	0.358	0.027*	0.209	0.208	0.136	0.465	0.29	0.114
NPI-caregiver distress	-0.333	0.068	0.363	0.045*	0.449	0.019*	0.885	0.000*	-	-
TSH	0.223	0.185	-0.215	0.202	-0.307	0.065	-0.454	0.023*	-0.437	0.029*

Aβ: Amyloid-beta; TNF-α: Tumor Necrosis Factor α; IL-1α: Interleukin-1α; IL-10: Interleukin-10; PGE2: Prostaglandin E2; TSH: Thyroid Stimulating Hormone; MMSE: Mini-Mental State Examination; CDR: Clinical Dementia Rating; ADAS-cog: Alzheimer’s Disease Assessment Scale-cognitive subscale; NPI- severity: Neuropsychiatric Inventory-severity; NPI- caregiver distress: Neuropsychiatric Inventory- caregiver distress. *Significant Correlation