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Table 1 P-values for t4 versus t4 and t5 of the 4th and the 5th degree polynomial logistic trend models, respectively; A: Japan; B: Japan excluding 10 exposed prefectures; C: 5 moderately exposed prefectures (Yamagata, Saitama, Tokyo, Kanagawa, Chiba); D: 5 highly exposed prefectures (Fukushima, Miyagi, Ibaraki, Tochigi, Iwate)

From: Response to the “Letter to the Editor” by Alfred Körblein, “Short term increase in low birthweight babies after Fukushima”

Scenario Variable p-values (Wald Chi2)
4th degree polynomial 5th degree polynomial
A t4 < 0.0001 0.0080
t5 ./. 0.0503
B t4 0.0004 0.0337
t5 ./. 0.0882
C t4 < 0.0001 0.0568
t5 ./. 0.1586
D t4 0.0926 0.1616
t5 ./. 0.2255
C + D t4 0.0003 0.0538
t5 ./. 0.1331