Area and district | 1st-round screening a | 2nd-round screening | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Internal comparison | External comparison | Internal comparison | External comparison | |||||||
Casesd/ | POR b | (95% CI) | SIR c | (95% CI) | Casesd/ | POR b | (95% CI) | SIR c | (95% CI) | |
Examinees | Examinees | |||||||||
(1) Nearest area | 14/41,810 | 1.1 | (0.5, 2.7) | 37.1 | (20.3, 62.3) | 17/34,558 | 3.5 | (1.2, 12.0) | 60.5 | (35.2, 96.8) |
(2) North middle district | 12/50,617 | 0.8 | (0.3, 1.9) | 28.1 | (14.5, 49.0) | 11/45,580 | 1.7 | (0.6, 6.2) | 35.7 | (17.8, 63.9) |
(3) Central middle district | 11/18,193 | 2 | (0.8, 5.0) | 75.8 | (37.9, 135.7) | 4/16,346 | 1.7 | (0.4, 7.6) | 38.3 | (10.4, 98.0) |
(4) Koriyama City district | 25/54,062 | 1.5 | (0.7, 3.5) | 62.2 | (40.2, 91.8) | 18/48,046 | 2.6 | (0.9, 9.1) | 57.3 | (34.0, 90.6) |
(5) South Middle district | 8/16,465 | 1.6 | (0.6, 4.3) | 62.6 | (27, 123.3) | 2/14,637 | 1 | (0.1, 5.4) | 22.1 | (2.7, 79.8) |
(6) Iwaki City district | 24/49,430 | 1.6 | (0.8, 3.6) | 67.2 | (43.0, 99.9) | 9/45,265 | 1.4 | (0.4, 5.2) | 25.7 | (8.0, 41.2) |
(7) Southeastern least- contaminated district | 9/29,816 | 1 | Reference | 48.3 | (22.1, 91.7) | 4/28,088 | 1 | Reference | 21.7 | (5.9, 55.5) |
(8) Western least-contaminated district | 12/33,720 | 1.2 | (0.5, 2.9) | 62.9 | (32.5, 109.9) | 5/32,208 | 1.1 | (0.3, 4.6) | 22.9 | (7.4, 53.4) |
(9) Northeastern least-contaminated district | 0/6360 | 0 | (0, 1.9) | 0 | (0, 123.0) | 1/5788 | 1.2 | (0.05, 9.7) | 27.3 | (0.69, 152.1) |
Total | 115/300,473 | 1.3 | (0.7, 2.7) | – | – | 71e/270,516 | 1.8 | (0.7, 5.9) | – | – |