Table 5 Variables associated with Pb concentrations in adults (≥18 years old). Linear mixed-effects analyses (n=7369).
Fixed effect variables | Estimate | 95% CI | |
|---|---|---|---|
Age (years) | 0.33 | 0.27 | 0.39 |
Sampling year | |||
2003-2005 | Reference | ||
2006-2008 | −10.39 | −12.00 | −8.82 |
2009-2011 | −11.79 | −13.20 | −10.42 |
2012-2014 | −12.14 | −13.71 | −10.62 |
2015-2017 | −13.26 | −14.77 | −11.78 |
2018-2019 | −13.30 | −14.91 | −11.74 |
Sex | |||
Male | Reference | ||
Female | −3.12 | −3.61 | −2.64 |
Smoking habits | |||
Non smoker | Reference | ||
Smoker | 2.52 | 1.85 | 3.19 |
Degree of urbanization | |||
Thinly populated area (rural area) | Reference | ||
Intermediate density area (towns or suburbs) | 2.91 | 1.40 | 4.35 |
Densely populated area (cities) | 3.48 | −2.18 | 8.97 |
Educational level | |||
Low education | Reference | ||
Medium education | −1.52 | −3.67 | 0.65 |
High education | −4.15 | −6.47 | −1.84 |
