Table 1.

Correlation analysis between different measures of amyloid burden in the liver and spleen of AA mice.

Organ Correlation	R2 of linear regression	Pearson correlation coefficient	Pearson correlation P value
L p5 vs L CRsq	0.9	0.94	6 × 10−12
L p5 vs L CRq	0.9	0.95	2 × 10−8
Sp p5 vs Sp CRsq	0.8	0.87	1 × 10−8
Sp p5 vs Sp CRq	0.8	0.87	1 × 10−5
L p5 vs Sp p5	0.7	0.82	4 × 10−7
L CRsq vs Sp CRsq	0.8	0.89	3 × 10−9
L CRq vs Sp CRq	0.8	0.91	2 × 10−6

Where: L, liver; Sp, spleen; CRq, quantitative measure of Congo red birefringence (μm²); CR_sq, semi-quantitative method of Congo red birefringence (0 – 4+).