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The mean susceptibility of rim+ and rim− lesions derived from the regression model
Time (yr) Rim+ Rim−
No. of Lesions Mean (ppb) 95% CI No. of Lesions Mean (ppb) 95% CI
0 16 13.51 11.09–15.93 16 7.77 6.27–9.26
0.5 10 23.40 19.47–27.33 9 24.39 23.11–25.67
1 7 25.69 20.78–30.60 11 24.22 22.79–25.64
1.5 5 28.99 26.00–31.98 5 26.25 23.86–28.63
2 6 27.33 23.22–31.44 7 16.66 13.57–19.76
2.5 8 26.17 22.10–30.25 10 18.29 15.27–21.31
3 7 21.45 18.31–24.59 9 12.50 10.19–14.81
4 8 22.02 16.92–27.12 10 12.00 9.40–14.61
6 5 13.42 9.64–17.21 6 5.90 4.36–7.45

Time (yr)	Rim+			Rim−
Time (yr)	No. of Lesions	Mean (ppb)	95% CI	No. of Lesions	Mean (ppb)	95% CI
0	16	13.51	11.09–15.93	16	7.77	6.27–9.26
0.5	10	23.40	19.47–27.33	9	24.39	23.11–25.67
1	7	25.69	20.78–30.60	11	24.22	22.79–25.64
1.5	5	28.99	26.00–31.98	5	26.25	23.86–28.63
2	6	27.33	23.22–31.44	7	16.66	13.57–19.76
2.5	8	26.17	22.10–30.25	10	18.29	15.27–21.31
3	7	21.45	18.31–24.59	9	12.50	10.19–14.81
4	8	22.02	16.92–27.12	10	12.00	9.40–14.61
6	5	13.42	9.64–17.21	6	5.90	4.36–7.45