Environment

Association between Arsenic Exposure from Drinking Water and Hematuria: Results from the Health Effects of Arsenic Longitudinal Study

Association between Arsenic Exposure from Drinking Water and Hematuria: Results from the Health Effects of Arsenic Longitudinal Study
Toxicology & Applied Pharmacology, Vol. 276, no. 1, pp 21-27. DOI: 10.1016/j.taap.2014.01.015

McClintock, T.R., Y. Chen, F. Parvez, D.V. Makarov, W. Ge, T. Islam, A. Ahmed, M. Rakibuz-Zaman, R. Hasan, G. Sarwar, V. Slavkovich, M.A. Bjurlin, J.H. Graziano, and H. Ahsan
04/01/2014

Arsenic (As) exposure has been associated with both urologic malignancy and renal dysfunction; however, its association with hematuria is unknown. We evaluated the association between drinking water As exposure and hematuria in 7843 men enrolled in the Health Effects of Arsenic Longitudinal Study (HEALS). Cross-sectional analysis of baseline data was conducted with As exposure assessed in both well water and urinary As measurements, while hematuria was measured using urine dipstick. Prospective analyses with Cox proportional regression models were based on urinary As and dipstick measurements obtained biannually since baseline up to six years. At baseline, urinary As was significantly related to prevalence of hematuria (P-trend < 0.01), with increasing quintiles of exposure corresponding with respective prevalence odds ratios of 1.00 (reference), 1.29 (95% CI: 1.04–1.59), 1.41 (95% CI: 1.15–1.74), 1.46 (95% CI: 1.19–1.79), and 1.56 (95% CI: 1.27–1.91). Compared to those with relatively little absolute urinary As change during follow-up (− 10.40 to 41.17 μg/l), hazard ratios for hematuria were 0.99 (95% CI: 0.80–1.22) and 0.80 (95% CI: 0.65–0.99) for those whose urinary As decreased by > 47.49 μg/l and 10.87 to 47.49 μg/l since last visit, respectively, and 1.17 (95% CI: 0.94–1.45) and 1.36 (95% CI: 1.10–1.66) for those with between-visit increases of 10.40 to 41.17 μg/l and > 41.17 μg/l, respectively. These data indicate a positive association of As exposure with both prevalence and incidence of dipstick hematuria. This exposure effect appears modifiable by relatively short-term changes in drinking water As.

Partisan Priorities: How Issue Ownership Drives and Distorts American Politics

Partisan Priorities: How Issue Ownership Drives and Distorts American Politics
Cambridge University Press.

Egan, Patrick J.
07/22/2013

Americans consistently name Republicans as the party better at handling issues like national security and crime, while they trust Democrats on issues like education and the environment – a phenomenon called “issue ownership.” Partisan Priorities investigates the origins of issue ownership, showing that in fact the parties deliver neither superior performance nor popular policies on the issues they “own.” Rather, Patrick J. Egan finds that Republicans and Democrats simply prioritize their owned issues with lawmaking and government spending when they are in power. Since the parties tend to be particularly ideologically rigid on the issues they own, politicians actually tend to ignore citizens' preferences when crafting policy on these issues. Thus, issue ownership distorts the relationship between citizens' preferences and public policies.

Taxes and U.S. Oil Production: Evidence From California and the Windfall Profit Tax

Taxes and U.S. Oil Production: Evidence From California and the Windfall Profit Tax
Revise & Resubmit ~ American Economic Journal: Econ Policy

Rao, Nirupama.
01/01/2013

The widespread boom in U.S. oil production has prompted state debates on levying new taxes on oil. This paper uses new well-level production data and price variation from federal oil taxes and price controls to assess how taxes affect production. Empirical estimates suggest an after-tax price elasticity ranging between 0.295 (0.038) and 0.336 (0.042). Response along the extensive margin is minimal. There is no discernible evidence of spatial shifting of production to minimize tax liabilities. Taken together the results suggest that taxes reduced domestic production in the 1980s, and the response largely came from wells that continued to pump oil, albeit at a reduced rate.

Transport, the Environment and Security: Making the Connection

Transport, the Environment and Security: Making the Connection
Edward Elgar Publishing, Ltd.

Zimmerman, Rae
09/30/2012

Effective means of transport are critical under both normal and extreme conditions, but modern transport systems are subject to many diverse demands. This path-breaking book uniquely draws together the typically conflicting arenas of transport, the environment and security, and provides collective solutions to their respective issues and challenges.

From a primarily urban perspective, the author illustrates that the fields of transportation, environment (with an emphasis on climate change) and security (for both natural hazards and terrorism) and their interconnections remain robust areas for policy and planning. Synthesizing existing data, new analyses, and a rich set of case studies, the book uses transportation networks as a framework to explore transportation in conjunction with environment, security, and interdependencies with other infrastructure sectors. The US rail transit system, ecological corridors, cyber security, planning mechanisms and the effectiveness of technologies are among the topics explored in detail. Case studies of severe and potential impacts of natural hazards, accidents, and security breaches on transportation are presented. These cases support the analyses of the forces on transportation, land use and patterns of population change that connect, disconnect and reconnect people from their environment and security.

The book will prove a fascinating and insightful read for academics, students, and practitioners across a wide range of fields including: transport, environmental economics, environmental management, urban planning, public policy, and terrorism and security.

Asthma Hospital Admissions and Ambient Air Pollutant Concentrations in New York City

Asthma Hospital Admissions and Ambient Air Pollutant Concentrations in New York City
Journal of Environmental Protection, Vol. 3 No. 29, 2012, pp. 1102-1116. doi: 10.4236/jep.2012.329129.

C. Restrepo, J. Simonoff, G. Thurston and R. Zimmerman
09/01/2012

Air pollution is considered a risk factor for asthma. In this paper, we analyze the association between daily hospital admissions for asthma and ambient air pollution concentrations in four New York City counties. Negative binomial regression is used to model the association between daily asthma hospital admissions and ambient air pollution concentrations. Potential confounding factors such as heat index, day of week, holidays, yearly population changes, and seasonal and long-term trends are controlled for in the models. Nitrogen dioxide (NO2), sulfur dioxide (SO2) and carbon monoxide (CO) show the most consistent statistically significant associations with daily hospitalizations for asthma during the entire period (1996-2000). The associations are stronger for children (0 - 17 years) than for adults (18 - 64 years). Relative risks (RR) for the inter-quartile range (IQR) of same day 24-hour average pollutant concentration and asthma hospitalizations for children for the four county hospitalization totals were: NO2 (IQR = 0.011 ppm, RR = 1.017, 95% CI = 1.001, 1.034), SO2 (IQR = 0.008 ppm, RR = 1.023, 95% CI = 1.004, 1.042), CO (IQR = 0.232 ppm, RR = 1.014, 95% CI = 1.003, 1.025). In the case of ozone (O3) and particulate matter (PM2.5) statistically significant associations were found for daily one-hour maxima values and children’s asthma hospitalization in models that used lagged values for air pollution concentrations. Five-day weighted average lag models resulted in these estimates: O3 (one-hour maxima) (IQR = 0.025 ppm, RR = 1.049, 95% CI = 1.002, 1.098), PM2.5 (one-hour maxima) (IQR = 16.679 μg/m3, RR = 1.055, 95% CI = 1.008, 1.103). In addition, seasonal variations were also explored for PM2.5 and statistically significant associations with daily hospital admissions for asthma were found during the colder months (November-March) of the year. Important differences in pollution effects were found across pollutants, counties, and age groups. The results for PM2.5 suggest that the composition of PM is important to this health outcome, since the major sources of NYC PM differ between winter and summer months.

Resetting our priorities in environmental health: An example from the south-north partnership in Lake Chapala, Mexico

Resetting our priorities in environmental health: An example from the south-north partnership in Lake Chapala, Mexico
Environ Res. 2011 Aug;111(6):877-80.

Cifuentes E, Lozano Kasten F, Trasande L, Goldman RH.
08/01/2011

Lake Chapala is a major source of water for crop irrigation and subsistence fishing for a population of 300,000 people in central Mexico. Economic activities have created increasing pollution and pressure on the whole watershed resources. Previous reports of mercury concentrations detected in fish caught in Lake Chapala have raised concerns about health risks to local families who rely on fish for both their livelihood and traditional diet. Our own data has indicated that 27% of women of childbearing age have elevated hair mercury levels, and multivariable analysis indicated that frequent consumption of carp (i.e., once a week or more) was associated with significantly higher hair mercury concentrations. In this paper we describe a range of environmental health research projects. Our main priorities are to build the necessary capacities to identify sources of water pollution, enhance early detection of environmental hazardous exposures, and deliver feasible health protection measures targeting children and pregnant women. Our projects are led by the Children's Environmental Health Specialty Unit nested in the University of Guadalajara, in collaboration with the Department of Environmental Health of Harvard School of Public Health and Department of Pediatrics of the New York School of Medicine. Our partnership focuses on translation of knowledge, building capacity, advocacy and accountability. Communication will be enhanced among women's advocacy coalitions and the Ministries of Environment and Health. We see this initiative as an important pilot program with potential to be strengthened and replicated regionally and internationally.

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