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Table 6 Effect of interaction between blood lead and blood cadmium levels on odds of T. gondii seropositivity, NHANES 1999–2004, 2009–10

From: Elevated blood lead and cadmium levels associated with chronic infections among non-smokers in a cross-sectional analysis of NHANES data

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

  1. Measure of interaction on additive scale: RERI (95 % CI) = -0.05 (−0.42–0.32)
  2. Measure of interaction on multiplicative scale: ratio of ORs (95 % CI) = 0.91 (0.69–1.21) P = 0.5262
  3. AORs are adjusted for NHANES cycle, age, gender, race/ethnicity, country of birth origin, family income, self-reported general health condition, and household crowding