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Table 4 Influence of the evacuation on prevalence of polycythemia in relation to smoking and obesity

From: Life as an evacuee after the Fukushima Daiichi nuclear power plant accident is a cause of polycythemia: the Fukushima Health Management Survey

     Before After p*
      n Number of polycythemia (%) Number of polycythemia (%)
Total   Evaculation (-) 3,272 26 (0.79) 38 (1.16) 0.10
  Evaculation (+) 7,446 66 (0.89) 115 (1.54) <0.001
Obese + Evaculation (-) 945 10 (1 .06) 1 5 (1.59) 0.36
Evaculation (+) 2,364 35 (1 .48) 58 (2.45) <0.01
- Evaculation (-) 2,327 6 (0.69) 23 (0.99) 0.23
Evaculation (+) 5,082 31(0.61) 57 (1.12) <0.001
Smoking + Evaculation (-) 335 4 (1.19) 6 (1.79) 0.50
Evaculation (+) 953 18 (1 .89) 35 (3.67) 0 < 0.01
- Evaculation (-) 2,973 22 (0.75) 32 (1.09) 0.16
Evaculation (+) 6,493 48 (0.74) 80 (1.23) <0.001
  1. *McNemar’s test for comparing changes in the prevalence of polycythemia in the evacuee and non—evacuee group before and after the earthquake.