Table 7.
OR estimates (95% CIs) for area of residence and IgM test results for six ATSDR studies conducted 1991–1994.
| Study area | Model 1a | Model 2b | Model 3c | Model 4d | Model 5e |
|---|---|---|---|---|---|
| Results below the reference range | |||||
| California | — | — | — | — | — |
| Kentucky | — | — | — | — | — |
| Massachusetts | — | — | — | — | — |
| Nebraska | — | — | — | — | — |
| North Carolina | — | — | — | — | — |
| Texas | — | — | — | — | — |
| Results above the reference range | |||||
| California | 0.65 (0.29–1.48) | 0.66 (0.27–1.60) | 0.60 (0.24–1.52) | 0.60 (0.23–1.56) | 0.67 (0.28–1.62) |
| Kentucky | 1.23 (0.52–2.88) | 1.21 (0.51–2.90) | 1.23 (0.51–2.96) | 1.19 (0.48–2.95) | 1.18 (0.50–2.79) |
| Massachusetts | 0.92 (0.46–1.83) | 0.92 (0.45–1.89) | 0.90 (0.44–1.87) | 0.85 (0.41–1.76) | 0.92 (0.46–1.84) |
| Nebraska | 1.01 (0.46–2.23) | 1.22 (0.52–2.84) | 1.05 (0.44–2.51) | 1.0 (0.42–2.41) | 0.98 (0.44–2.17) |
| North Carolina | 1.33 (0.40–4.44) | — | — | — | — |
| Texas | 0.58 (0.28–1.19) | 0.65 (0.30–1.43) | 0.68 (0.31–1.51) | 0.58 (0.25–1.38) | 0.62 (0.29–1.34) |
—
, adjusted OR estimates could not be calculated.
a
Model 1: unadjusted.
b
Model 2: adjusted for age, sex, race, Hispanic ethnicity, educational level, years in residence.
c
Model 3: adjusted for the model 2 covariates and other exposure information.
d
Model 4: adjusted for the model 3 covariates, symptoms, illnesses, and overall health.
e
Model 5: adjusted using the backward elimination strategy of Kleinbaum (1994).