Table 6.
Effect of interaction between blood lead and blood cadmium levels on odds of T. gondii seropositivity, NHANES 1999–2004, 2009–10
| Blood lead levels | Blood cadmium levels | ||||
|---|---|---|---|---|---|
| <Median | ≥Median | AOR (95 % CI) within Pb strata | |||
| N (Weighted %) | AOR (95 % CI) | N (Weighted %) | AOR (95 % CI) | ||
| <Median | 4629 (5.2) | 1.0 | 3892 (9.3) | 1.24 (0.978–1.59) | 1.26 (0.94–1.69 |
| P = 0.0805 | P = 0.1222 | ||||
| ≥Median | 4101 (10.4) | 1.45 (1.17–1.79) | 5803 (17.0) | 1.64 (1.30–2.07) | 1.34 (0.97–1.85) |
| P = 0.0007 | P = <0.0001 | P = 0.0779 | |||
| AOR (95 % CI) within Cd strata | 1.13 (0.78–1.62) | 1.41 (1.22–1.63) | |||
| P = 0.5244 | P = <0.0001 | ||||
Measure of interaction on additive scale: RERI (95 % CI) = -0.05 (−0.42–0.32)
Measure of interaction on multiplicative scale: ratio of ORs (95 % CI) = 0.91 (0.69–1.21) P = 0.5262
AORs are adjusted for NHANES cycle, age, gender, race/ethnicity, country of birth origin, family income, self-reported general health condition, and household crowding