Table 2. Odds ratio (OR) with 95% confidence interval (95% CI) and significance level (P-value) for maternal exposure to benzene and toluene in relation to preterm delivery, for benzene and toluene exposure windows of 5, 10 and 15 days prior to delivery. São José dos Campos (SP), 2016*.
| OR | 95% CI | P-value | |
|---|---|---|---|
| Benzene 5 days (µg/m3) | 1.12 | 1.01-1.23 | 0.04 |
| Benzene 10 days (µg/m3) | 1.07 | 0.97-1.19 | 0.16 |
| Benzene 15 days (µg/m3) | 1.04 | 0.94-1.15 | 0.46 |
| Toluene 5 days (µg/m3) | 1.12 | 1.01-1.23 | 0.04 |
| Toluene 10 days (µg/m3) | 1.10 | 0.99-1.22 | 0.06 |
| Toluene 15 days (µg/m3) | 1.07 | 0.97-1.19 | 1.18 |
*Adjusted for the number of prenatal consultations.