Table III.
The regression coefficient (beta) with 95% confidence intervals in the linear regression model for race (Black versus White) and log transformed total IgE. The crude estimate is included as are estimates adjusted for various SES variables and other selected factors.*
| Log transformed total IgE | Average % Increase in total IgE (for a Black woman compared to a White woman) | |
|---|---|---|
| N | 782 | |
| Regression Coefficient (Beta) for Race (95% CI) | 0.87 (0.64, 1.10) | 139% |
| Regression Coefficient (Beta) (95% CI) for race adjusting for each of the following individually: | ||
| Number of prior pregnancies | 0.89 (0.66, 1.12) | 144% |
| Report of household income | 0.85 (0.61, 1.09) | 134% |
| Maternal education | 0.83 (0.59, 1.07) | 129% |
| Make monthly mortgage or rental payments | 0.87 (0.64, 1.10) | 139% |
| Prenatal indoor pet(s) | 0.86 (0.62, 1.11) | 136% |
| Mother was married or living as married during pregnancy | 0.84 (0.60, 1.09) | 132% |
| Women smoked | 0.88 (0.65, 1.11) | 141% |
| Home is in urban setting | 0.82 (0.53, 1.10) | 127% |
| Maternal age at enrollment | 0.85 (0.61, 1.08) | 134% |
| Regression Coefficient (Beta) for Race (95% CI) adjusted for above variables † | 0.78 (0.48, 1.09) | 118% |
| For women who had dust samples: | ||
| Endotoxin N=583 | 0.84 (0.59, 1.10) | 132% |
| Dog allergen N=611 | 0.82 (0.56, 1.08) | 127% |
| Cat allergen N=610 | 0.89 (0.62, 1.16) | 144% |
| Cockroach allergen N=604 | 0.87 (0.62, 1.13) | 139% |
| Regression Coefficient (Beta) for Race (95% CI) adjusted for all variables including dust‡ N=564 | 0.88 (0.52, 1.24) | 141% |
Total IgE was log transformed to meet model assumptions. The regression coefficient (beta) should be interpreted as the (ebeta – 1) percent increase in the mean total IgE for Black women compared to White women.
Variables are: Number of prior pregnancies, income, education, rental/mortgage payments, pets in the home during pregnancy, whether the mother was married or living as married during pregnancy, woman was a smoker, urban residence and maternal age at enrollment.
Variables are: Number of prior pregnancies, income, education, rental/mortgage payments, pets in the home during pregnancy, whether the mother was married or living as married during pregnancy, woman was a smoker, urban residence and maternal age at enrollment. Models also adjusted for levels of endotoxin and dog, cat and cockroach allergen from home samples.