TABLE 2.
Relative Risk Regression Model Prevalence Ratios for Blood Lead Level Elevation at Arrival: Refugee Children Younger Than 7 Years Who Arrived in Massachusetts From 2000 to 2007
| Variable | Prevalence Ratio (95% CI) |
| Age < 3 y | 0.79 (0.58, 1.08) |
| Year of arrival | |
| 2007 (Ref) | 1.00 |
| 2006 | 2.96 (1.18, 7.42) |
| 2005 | 2.32 (0.99, 5.45) |
| 2004 | 2.71 (1.19, 6.15) |
| 2003 | 3.90 (1.69, 9.00) |
| 2002 | 2.04 (0.65, 6.40) |
| 2001 | 2.56 (1.00, 6.59) |
| 2000 | 6.83 (2.97, 15.70) |
| World region of birtha | |
| Europe and Central Asia (Ref) | 1.00 |
| Africa | 3.77 (2.34, 6.09) |
| East Asia and the Pacific | 1.11 (0.38, 3.24) |
| Latin America and the Caribbean | 2.42 (0.83, 7.07) |
| Near East and South Asia | 3.64 (1.85, 7.84) |
| Median census tractb year home built before 1950 at initial testing | 0.88 (0.62, 1.23) |
| Venous blood draw | 0.89 (0.40, 2.00) |
| Testing done May–October | 1.96 (1.40, 2.75) |
| Anemia at arrival | 1.10 (0.80, 1.53) |
| ≥ 1 pathologic intestinal parasite at arrival | 1.21 (0.90, 1.65) |
| Height-for-age z score < −2 | 1.03 (0.72, 1.47) |
| BMI-for-age z score < −2 | 1.25 (0.72, 2.14) |
Notes. BMI = body mass index; CI = confidence interval. Sample size was n = 948. BMI was defined as weight in kilograms divided by height in meters squared.
a
Based on US Department of State designations of world regions, 2007.
b
Based on census tract data from 2000 US Census, Summary File 3.11