Table 1 Tenwek ESD study serum selenium concentration (μg/L), by participant characteristic
Characteristic | Participant n (%) | Serum Selenium Mean (SD) | p value* | |
|---|---|---|---|---|
Sex | ||||
 Male | 158 (54) | 85.3 | (25.6) | 0.94 |
 Female | 136 (46) | 85.6 | (31.2) | |
Age | ||||
  < 50 | 157 (53) | 83.8 | (29.0) | 0.29 |
  ≥ 50 | 137 (47) | 87.3 | (27.5) | |
Residence | ||||
 Location A | 91 (31) | 70.6 | (19.6) | p < 0.0001 |
 Location B | 58 (20) | 118.8 | (25.8) | |
 Location C | 144 (49) | 81.5 | (22.9) | |
Education | ||||
 Primary or greater | 100 (34) | 84.6 | (25.8) | 0.70 |
 Less than primary | 194 (66) | 85.9 | (29.5) | |
Family history of cancer | ||||
 Yes | 33 (11) | 89.8 | (30.0) | 0.35 |
 No | 261 (69) | 84.9 | (28.1) | |
Family history of esophageal cancer | ||||
 Yes | 18 (6) | 84.5 | (27.4) | 0.88 |
 No | 275 (94) | 85.5 | (28.5) | |
Tobacco | ||||
 Regular Usea | 56 (19) | 85.8 | (25.7) | 0.91 |
 No regular use | 238 (81) | 85.4 | (28.9) | |
Alcohol | ||||
 Regular Drinkingb | 92 (31) | 83.0 | (24.4) | 0.31 |
 No regular drinking | 201 (69) | 86.7 | (30.0) | |
Esophageal Squamous Dysplasia (ESD) | ||||
 Dysplasia | 42 (14) | 94.9 | (29.0) | 0.02 |
 No Dysplasia | 252 (86) | 83.9 | (28.0) | |