TABLE 3.

Linear fitting equations for mean susceptibility (χ) (ppb) versus age for the RII analysis.

	χ = A × age+B	Error in A (ppb/year)	Error in B (ppb)	r	r-CI	p-value
CN	χ = 0.82 × age+49	0.05	2.89	0.80	(0.77, 0.83)	<0.001
GP	χ = 0.74 × age+187	0.13	7.62	0.43	(0.36, 0.5)	<0.001
PUT	χ = 1.38 × age+50	0.07	3.88	0.86	(0.83, 0.88)	<0.001
THA	χ = −0.1 × age+33	0.05	2.70	−0.17	(−0.25, −0.09)	<0.001
PT	χ = 0.33 × age+62	0.05	2.87	0.52	(0.45, 0.58)	<0.001
RN	χ = 1.23 × age+100	0.09	5.14	0.77	(0.74, 0.81)	<0.001
SN	χ = 0.77 × age+158	0.11	6.18	0.51	(0.45, 0.57)	<0.001
DN	χ = 0.81 × age+105	0.12	6.98	0.53	(0.46, 0.59)	<0.001

R, Pearson correlation coefficient; r-CI, confidence interval of r.