Table 2.
Education Level and Tertiles of Exposure.
| Exposure Level | Less Than 9th Grade (±SE%) | 9–11th Grade (Includes 12th Grade) (±SE%) | High School Grad/GED Equivalent (±SE%) | Some College or AA Degree (±SE%) | College Graduate or Above (±SE%) |
|---|---|---|---|---|---|
| N | 802 | 1600 | 2928 | 3587 | 3215 |
| Tertile 1 | 61.1% (2.3) * | 67.4% (2.2) + | 73.8% (1.2) ^ | 79.1% (1.0) ^^ | 80.3% (1.4) ^^^ |
| Tertile 2 | 32.1% (2.0) ** | 28.6% (2.1) ++ | 23.9% (1.2) | 18.5% (0.9) | 18.4% (1.3) |
| Tertile 3 | 5.9% (0.8) *** | 3.1% (0.4) +++ | 2.0% (0.4) | 2.3% (0.4) | 1.1% (0.3) |
| Total | 100% | 100% | 100% | 100% | 100% |
* p < 0.05 significant difference between less than 9th grade and all other education categories. ** p < 0.05 significant difference between less than 9th grade and High school graduate/GED equivalent, Some college or AA degree, and college graduate or above. *** p < 0.05 significant difference between less than 9th grade and all other educational attainments in exposure group. + p < 0.10 moderately significant difference between 9th and 11th grade (including 12th grade) and High school graduate/GED equivalent. ++ p < 0.05 significant difference between 9th and 11th grade (including 12th grade), some college or AA degree, and college graduate or above. +++ p < 0.05 significant difference between 9th and 11th grade (includes 12th grade) and High School graduate/GED equivalent, and College graduate or above. ^ p < 0.05 significant difference between High school graduate/GED equivalent and all other educational categories. ^^ p < 0.05 significant difference between some college or AA degree and High School graduate/GED equivalent, 9–11th grade (including 12th grade), and Less than 9th grade. ^^^ p < 0.05 significant difference between college graduate or above and high school graduate/GED equivalent, 9–11th grade (includes 12th grade), and less than 9th grade.