Table 2.

Univariate non-parametric linear regression for the muscle ¹³⁷Cs concentration and year in Japanese monkeys captured in Fukushima Prefecture in 2011–2020 (n = 1459)

Year	Effect	95% CI			P-value
2011	Reference
2012	− 567.41	− 997.59	to	− 137.24	0.01
2013	− 707.64	− 1136.93	to	− 278.35	0.001
2014	− 776.46	− 1205.40	to	− 347.52	< 0.0001
2015	− 814.05	− 1242.94	to	− 385.16	< 0.0001
2016	− 791.79	− 1221.36	to	− 362.23	< 0.0001
2017	− 843.11	− 1272.04	to	− 414.18	< 0.0001
2018	− 818.74	− 1247.57	to	− 389.92	< 0.0001
2019	− 830.43	− 1259.38	to	− 401.48	< 0.0001
2020	− 819.15	− 1248.35	to	− 389.96	< 0.0001

CI, confidence interval