Table 3.
Categorical Exposure-Response Relationships Between Blue-Yellow Color Vision Defects and Cumulative Exposure to Nonhexane Solvents, Hexane, and Hexane in the Presence of Acetone (Log-Binomial Regression) Among Participants Completing the Lanthony Desaturated D-15 Panel Test, Bay Area Solvent Study, 2007–2013
| Model and Exposure Category | All Participants |
Participants Aged ≤50 Years |
||||
|---|---|---|---|---|---|---|
| No. of Cases | PR | 95% CI | No. of Cases | PR | 95% CI | |
| Nonhexane solvents | ||||||
| Exposure, mg/m3-yeara | ||||||
| 0–670.9 | 155 | 1.00 | Referent | 60 | 1.00 | Referent |
| >670.9–1,364.3 | 29 | 1.25 | 0.81, 1.92 | 12 | 1.75 | 0.89, 3.46 |
| >1,364.3–2,470.7 | 39 | 1.16 | 0.75, 1.78 | 18 | 1.98 | 0.98, 4.02 |
| >2,470.7 | 40 | 1.31 | 0.86, 2.00 | 17 | 2.17 | 1.03, 4.56 |
| Age, years | 47 | 1.04 | 1.02, 1.07 | 13 | 1.02 | 0.96, 1.08 |
| Hexane | ||||||
| Exposure, mg/m3-yeara | ||||||
| Unexposed to hexane | 155 | 1.00 | Referent | 60 | 1.00 | Referent |
| >0–33.7 | 81 | 0.73 | 0.51, 1.04 | 25 | 0.77 | 0.41, 1.42 |
| >33.7 | 33 | 0.94 | 0.68, 1.29 | 13 | 1.26 | 0.76, 2.11 |
| Age, years | 41 | 1.05 | 1.02, 1.07 | 22 | 1.04 | 0.99, 1.10 |
| Hexane + acetone | ||||||
| Exposure, mg/m3-yearb | ||||||
| Unexposed to hexane | 145 | 1.00 | Referent | 56 | 1.00 | Referent |
| >0–17.1 | 81 | 0.65 | 0.43, 0.99 | 25 | 0.84 | 0.45, 1.57 |
| >17.1 | 23 | 1.15 | 0.84, 1.57 | 11 | 1.62 | 0.97, 2.72 |
| Age, years | 41 | 1.04 | 1.02, 1.07 | 20 | 1.04 | 0.99, 1.10 |
Abbreviations: CI, confidence interval; PR, prevalence ratio.
a There were 689 total participants and 338 participants aged ≤50 years.
b There were 607 total participants and 291 participants aged ≤50 years.