Table 16. Demographic Characteristics Associated with Occurrence of 137Cs in Local Residents Characteristic Percent of Population (n=196) where Cs-137 was Not Detected (H0),  (amargin of error) Percent of Population (n=75) where Cs-137 was Detected (HA), (margin of error) bp-value (HAÌH0) Gender Male  57.1 (51.3 to 63.5) 69.3 (63.5 to 74.5) 0.066 Female 42.9 (36.5 to 48.7) 30.7 (25.5 to 36.5)           Ethnicity Hispanic  14.3 (10.3 to 18.8) 13.3 (9.2 to 17.3) 0.516 Non-Hispanic 83.2 (78.6 to 87.5) 81.3 (76.4 to 85.6)   Other 2.6 (0.7 to 4.4) 5.3 (2.2 to 7.7)           Age  ³ 60 years 23.0 (17.7 to 27.7) 24.0 (18.8 to 29.2) 0.860   < 60 years 77.0 (72.0 to 82.0) 76.0 (70.8 to 81.2)             Currently or previously classified as a radiation worker Yes 4.5 (1.8 to 6.6) 2.7 (0.7 to 4.8) 0.472 No 95.4 (93.0 to 98.2) 97.3 (95.2 to 98.9)                     Consumption of wild game within last 3 months Yes 84.7 (80.4 to 89.3) 78.7 (73.8 to 83.4)   No 15.3 (10.7 to 19.6) 21.3 (16.6 to 26.2) 0.237                   Medical treatment, other than x-rays, using radionuclides Yes 4.6 (1.8 to 6.6) 2.8 (0.7 to 4.8) 0.516 No 95.4 (93.0 to 98.2) 97.3 (95.2 to 98.9)                     European travel within the last 2 years No 4.1 (1.8 to 6.6)  5.3 (2.6 to 7.7) 0.654 Yes 95.9 (93.4 to 98.2) 94.7 (91.9 to 97.4)             Current smoker Yes 11.2 (7.4 to 14.8) 21.3 (16.6 to 26.2) 0.032   No 88.8 (85.6 to 93.4) 78.7 (74.2 to 83.8)   aThe margin of error represents the 95% confidence interval of the observed proportion. Under complete replication of this experiment, one would expect the confidence interval to include the true population proportion 95% of the time if the sample was representative of the true population. bThe probability of observing a percentage greater than HA assuming that the percentage (HO) is the true value.