Table 1.
passenger number |
passenger sex |
passenger race |
phosphorylated BChE |
BChE activity, units/ml |
number of flights in the trip |
Flight duration, hours |
destination |
---|---|---|---|---|---|---|---|
1a | female | White | positive | 2.7 | 2 | 6 | domestic USA |
1b | female | White | negative | 3.2 | 0 | 0 | no airplane 6 months |
2 | male | White | positive | 3.0 | 2 | 10.5 | transcontinental |
3a | female | White | positive | 2.4 | 8 | 25 | transcontinental |
3b | female | White | negative | 2.2 | 0 | 0 | no airplane 3 months |
4a | female | White | positive | 2.2 | 2 | 5 | domestic USA |
4b | female | White | negative | 2.3 | 0 | 0 | no airplane 3 months |
5 | female | White | positive | 3.4 | 4 | 10 | domestic USA |
6a | female | Asian | positive | 2.2 | 2 | 12.5 | transcontinental |
6b | female | Asian | negative | 3.3 | 0 | 0 | no airplane 7 months |
7a | female | Asian | negative | 2.6 | 4 | 9 | domestic USA |
7b | female | Asian | negative | 2.6 | 0 | 0 | no airplane 15 months |
8 | female | White | negative | 2.5 | 2 | 2.5 | domestic USA |
9a | male | White | negative | 1.7 | 5 | 9 | domestic USA |
9b | male | White | negative | 2.0 | 0 | 0 | no airplane 4 months |
10 | male | White | negative | 2.9 | 3 | 3 | domestic USA |
11 | female | White | negative | 2.7 | 8 | 17 | transcontinental |
12 | female | White | negative | 1.3 | 4 | 22.5 | transcontinental |
White passengers were non-Hispanic. Positive samples contain 0.05% to 3% phosphorylated butyrylcholinesterase (BChE). Negative samples contain less than 0.05% phosphorylated butyrylcholinesterase. Butyrylcholinesterase activity was tested in quadruplicate; the standard deviation for activity assays ranged from 1 to 5%. Four positive and two negative passengers were retested 3 to 15 months after their last jet airplane trip; results for the retested samples are in rows indicated by the letter “b”.