Kristina M. Zierold

Prevalence of Chronic Diseases in Adults Exposed to Arsenic-Contaminated Drinking Water

Inorganic arsenic is naturally occurring in groundwaters throughout the United States. This study investigated arsenic exposure and self-report of 9 chronic diseases. We received private well-water samples and questionnaires from 1185 people who reported drinking their water for 20 or more years. Respondents with arsenic levels of 2 microg/L or greater were statistically more likely to report a history of depression, high blood pressure, circulatory problems, and bypass surgery than were respondents with arsenic concentrations less than 2 microg/L.

School-sponsored work programs: a first look at differences in work and injury outcomes of teens enrolled in school-to-work programs compared to other-working teens.

Objectives To evaluate work experiences among teens enrolled in school-sponsored work (SSW) programs and compare the findings to other-working teens. This study, the first to assess work-related safety and health for teens in SSW programs, includes teens working one job and teens working multiple jobs. Methods A survey was conducted among 6810 teens in school districts in five public health regions in Wisconsin. Information on demographics, work characteristics, injury and school performance was collected. Results Of 3411 high school teens (14–18 years old) working during the school year, 461 were enrolled in SSW programs. SSW teens were more likely to hold multiple jobs, work over 40 h per week, and work 2 or more days per week before 8:00 h compared with other-working teens. SSW teens working only one job were no more likely to be injured than other-working teens. However, SSW teens working multiple jobs were significantly more likely to be severely injured compared to other-working teens (AOR 3.49; 95% CI 1.52 to 8.02). Conclusions SSW programs were created to prepare youth for transition into the workforce after high school. This first study suggests that students in SSW programs working only one job are no more likely to be injured at work compared with other-working teens. However, being enrolled in SSW programs is not protective against work injury, which would have been expected based on the philosophy of these programs. Furthermore, when students work multiple jobs, those enrolled in SSW programs are more likely to be severely injured. Possible explanations are provided.

A comparison of school performance and behaviors among working and nonworking high school students

To evaluate the effect of after-school employment on Grade Point Average, absenteeism, school tardiness, extracurricular activities, and class-cutting, a cross-sectional anonymous questionnaire was completed by 7,506 high school students in May 2002. Working students did not report lower grades, higher absenteeism, or more school tardiness than their nonworking peers. However, students who worked were significantly more likely to cut classes and not take part in extracurricular activities than were students who were not employed. Factors associated with lower Grade Point Average among working students included working before 8:00 AM (adjusted odds ratio [AOR] = 1.73, 95% CI = 1.18–2.52), being injured at work (AOR = 1.47, 95% CI = 1.10–1.96), and feeling that the job was more important than school (AOR = 2.74, 95% CI = 2.08–3.60).

Trends in Blood Lead Levels Among Children Enrolled in the Special Supplemental Nutrition Program for Women, Infants, and Children From 1996 to 2000

We analyzed data from the Wisconsin Childhood Lead Poisoning Prevention Program to examine the distribution of and trends in elevated blood lead levels among WIC-enrolled children from 1996 until 2000. Higher blood lead levels were seen among WIC-enrolled children, and although not statistically significant, the rate of blood lead level decline among WIC-enrolled children was greater than among non-WIC-enrolled children.

Exposure to Lead and Length of Time Needed to Make Homes Lead-Safe for Young Children

OBJECTIVES We determined the length of time needed to make homes lead-safe in a population of children aged 0 to 6 years with blood lead levels (BLLs) of 20 micrograms per deciliter (mug/dL) or greater. Reducing this time would reduce childrens exposure to lead. METHODS Data came from the Wisconsin Childhood Lead Poisoning Prevention Programs comprehensive blood lead surveillance system. Analysis was restricted to children whose first BLL test value during 1996-1999 was between 20 and 40 mug/dL and for whom housing intervention data were available (n=382). RESULTS The median length of time required to make a home lead-safe was 465 days. Only 18% of children lived in homes that were made lead-safe within 6 months; 45% lived in homes requiring more than 18 months to be lead-safe. CONCLUSIONS Efforts are needed to reduce the time it takes to make a home lead-safe. Although abatement orders always include time limits, improved compliance with the orders must be enforced. Greater emphasis should be placed on securing lead-safe or lead-free housing for families, thus reducing lead exposure.

Elevated Blood Lead Levels by Length of Time From Resettlement to Health Screening in Kentucky Refugee Children

Objectives To examine elevated blood lead levels (EBLLs) in refugee children by postrelocation duration with control for several covariates. Methods We assessed EBLLs (≥ 5µg/dL) between 2012 and 2016 of children younger than 15 years (n = 1950) by the duration of resettlement to health screening by using logistic regression, with control for potential confounders (gender, region of birth, age of housing, and intestinal infestation) in a cross-sectional study. Results Prevalence of EBLLs was 11.2%. Length of time from resettlement to health screening was inversely associated with EBLLs (tertile 2 unadjusted odds ratio [OR] = 0.79; 95% confidence interval [CI] = 0.56, 1.12; tertile 3 OR = 0.62; 95% CI = 0.42, 0.90; tertile 2 adjusted odds ratio [AOR] = 0.62; 95% CI = 0.39, 0.97; tertile 3 AOR = 0.57; 95% CI = 0.34, 0.93). There was a significant interaction between intestinal infestation and age of housing (P < .003), indicating significant risk in the joint exposure of intestinal infestation (a pica proxy) and age of house. Conclusions Elevated blood lead levels were reduced with increasing length of time of resettlement in unadjusted and adjusted models. Improved housing, early education, and effective safe-house inspections may be necessary to address EBLLs in refugees.