Table 1.
Demographic and pesticide results for 89 subjects with measured pesticide levels.
| Characteristic | Report of past occupational pesticide exposure (n=36) | Report of no past occupational pesticide exposure (n=53) | Combined population (n=89) | p-Value pesticide exposure vs. no pesticide exposure*** |
|---|---|---|---|---|
| % male | 86% | 70% | 76% | p=0.08 |
| Mean year birth (s.d.) | 74 (6) | 73 (6) | 74 (6) | p=0.56 |
| Mean years of school (s.d.) | 4.4 (3.4) | 7.3 (5.2) | 6.1 (4.7) | p=0.002 |
| % p,p′–DDE<LOD* | 3% | 9% | 7% | p=0.22 |
| % p,p′–DDT<LOD* | 16% | 26% | 22% | p=0.28 |
| % dieldrin<LOD* | 25% | 55% | 43% | p=0.005 |
| % β-HCH<LOD* | 0% | 0% | 0% | p=0.99 |
| Mean p,p′–DDE (s.d.)** | 0.70 (0.55) | 1.20 (1.46) | 1.00 (1.20) | p=0.50 |
| Mean p,p′–DDT (s.d.)** | 0.14 (0.08) | 0.12 (0.12) | 0.08 (3.74) | p=0.08 |
| Mean dieldrin (s.d.)** | 7.58 (19.63) | 3.40 (6.48) | 5.09 (13.50) | p=0.01 |
| Mean β-HCH (s.d.) | 0.78 (0.30) | 0.73 (0.19) | 0.75 (0.24) | p=0.69 |
*
LODs for β-HCH, dieldrin, p,p′–DDT and p,p′–DDE, were 0.10, 0.25, 0.05, and 0.05 ng/ml, respectively.
**
Units are ng/ml. Means calculated using imputed values for values of p,p′–DDE, p,p′–DDT, and dieldrin below LOD.
***
p-Values based on chi-square test for categorical data, and t-test using the log of pesticide values for comparison of means.