Dataset Information

Precipitation and primary health care visits for gastrointestinal illness in Gothenburg, Sweden.

ABSTRACT: BACKGROUND:The river Göta Älv is a source of freshwater for the City of Gothenburg, Sweden, and we recently identified a clear influence of upstream precipitation on concentrations of indicator bacteria in the river water, as well as an association with the daily number of phone calls to the nurse advice line related to acute gastrointestinal illnesses (AGI calls). This study aimed to examine visits to primary health-care centers owing to similar symptoms (AGI visits) in the same area, to explore associations with precipitation, and to compare variability in AGI visits and AGI calls. METHODS:We obtained data covering six years (2007-2012) of daily AGI visits and studied their association with prior precipitation (0-28 days) using a distributed lag nonlinear Poisson regression model, adjusting for seasonal patterns and covariates. In addition, we studied the effects of prolonged wet and dry weather on AGI visits. We analyzed lagged short-term relations between AGI visits and AGI calls, and we studied differences in their seasonal patterns using a binomial regression model. RESULTS:The study period saw a total of 17,030 AGI visits, and the number of daily visits decreased on days when precipitation occurred. However, prolonged wet weather was associated with an elevated number of AGI visits. Differences in seasonality patterns were observed between AGI visits and AGI calls, as visits were relatively less frequent during winter and relatively more frequent in August, and only weak short-term relations were found. CONCLUSION:AGI visits and AGI calls seems to partly reflect different types of AGI illnesses, and the patients' choice of medical contact (in-person visits versus phone calls) appears to depend on current weather conditions. An association between prolonged wet weather and increased AGI visits supports the hypothesis that the drinking water is related to an increased risk of AGI illnesses.

SUBMITTER: Tornevi A

PROVIDER: S-EPMC4447281 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature

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Precipitation and primary health care visits for gastrointestinal illness in Gothenburg, Sweden.

Tornevi Andreas A Barregård Lars L Forsberg Bertil B

PloS one 20150528 5

<h4>Background</h4>The river Göta Älv is a source of freshwater for the City of Gothenburg, Sweden, and we recently identified a clear influence of upstream precipitation on concentrations of indicator bacteria in the river water, as well as an association with the daily number of phone calls to the nurse advice line related to acute gastrointestinal illnesses (AGI calls). This study aimed to examine visits to primary health-care centers owing to similar symptoms (AGI visits) in the same area, t ...[more]

PMID: 26020929

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Project description:BackgroundCombined sewer overflows (CSOs) occur in combined sewer systems when sewage and stormwater runoff are released into water bodies, potentially contaminating water sources. CSOs are often caused by heavy precipitation and are expected to increase with increasing extreme precipitation associated with climate change.ObjectivesThe aim of this study was to assess whether the association between heavy rainfall and rate of emergency room (ER) visits for gastrointestinal (GI) illness differed in the presence of CSOs.MethodsFor the study period 2003-2007, time series of daily rate of ER visits for GI illness and meteorological data were organized for three exposure regions: a) CSOs impacting drinking water sources, b) CSOs impacting recreational waters, c) no CSOs. A distributed lag Poisson regression assessed cumulative effects for an 8-day lag period following heavy (≥ 90th and ≥ 95th percentile) and extreme (≥ 99th percentile) precipitation events, controlling for temperature and long-term time trends.ResultsThe association between extreme rainfall and rate of ER visits for GI illness differed among regions. Only the region with drinking water exposed to CSOs demonstrated a significant increased cumulative risk for rate (CRR) of ER visits for GI for all ages in the 8-day period following extreme rainfall: CRR: 1.13 (95% CI: 1.00, 1.28) compared with no rainfall.ConclusionsThe rate of ER visits for GI illness was associated with extreme precipitation in the area with CSO discharges to a drinking water source. Our findings suggest an increased risk for GI illness among consumers whose drinking water source may be impacted by CSOs after extreme precipitation.CitationJagai JS, Li Q, Wang S, Messier KP, Wade TJ, Hilborn ED. 2015. Extreme precipitation and emergency room visits for gastrointestinal illness in areas with and without combined sewer systems: an analysis of Massachusetts data, 2003-2007. Environ Health Perspect 123:873-879; http://dx.doi.org/10.1289/ehp.1408971.

Project description:Runoff from heavy precipitation events can lead to microbiological contamination of source waters for public drinking water supplies. Philadelphia is a city of interest for a study of waterborne acute gastrointestinal illness (AGI) because of frequent heavy precipitation, extensive impervious landcover, and combined sewer systems that lead to overflows. We conducted a time-series analysis of the association between heavy precipitation and AGI incidence in Philadelphia, served by drinking water from Delaware River and Schuylkill River source waters. AGI cases on each day during the study period (2015-2017) were captured through syndromic surveillance of patients' chief complaint upon presentation at local emergency departments. Daily precipitation was represented by measurements at the Philadelphia International Airport and by modeled precipitation within the watershed boundaries, and we also evaluated stream flowrate as a proxy of precipitation. We estimated the association using distributed lag nonlinear models, assuming a quasi-Poisson distribution of the outcome variable and with adjustment for potential confounding by seasonal and long-term time trends, ambient temperature, day-of-week, and major holidays. We observed an association between heavy precipitation and AGI incidence in Philadelphia that was primarily limited to the spring season, with significant increases in AGI that peaked from 8 to 16 days following a heavy precipitation event. For example, the increase in AGI incidence related to airport precipitation above the 95th percentile (vs no precipitation) during spring reached statistical significance on lag day 7, peaked on day 16 (102% increase, 95% confidence interval: 16%, 252%), and declined while remaining significantly elevated through day 28. Similar associations were observed in analyses of watershed-specific precipitation in relation to AGI cases within the populations served by drinking water from each river. Our results suggest that heavy precipitation events in Philadelphia result in detectable local increases in waterborne AGI.

Project description:ImportanceAdvance care planning (ACP) is intended to maximize the concordance of preferences with end-of-life (EOL) care and is assumed to lead to less intensive use of health care services. The Centers for Medicare & Medicaid Services began reimbursing clinicians for ACP discussions with patients in 2016.ObjectiveTo determine whether billed ACP visits are associated with intensive use of health care services at EOL.Design setting and participantsThis prospective patient-level cohort analysis of seriously ill patients included Medicare fee-for-service beneficiaries who met criteria for serious illness from January 1 to December 31, 2016, and died from January 1, 2017, to December 31, 2018. Analyses were completed from November 1, 2020, to March 31, 2021.Main outcomes and measuresFive measures of EOL health care services used (inpatient admission, emergency department visit, and/or intensive care unit stay within 30 days of death; in-hospital death; and timing of first hospice bill) and a measure of EOL expenditures. Analyses were adjusted for age, race and ethnicity, sex, Charlson Comorbidity Index, Medicare-Medicaid dual eligibility, and expenditure by hospital referral region (high, medium, or low). The primary exposure was receipt of a billed ACP service classified as none, timely (>1 month before death), or late (first ACP visit ≤1 month before death).ResultsOf the 955 777 Medicare beneficiaries who met criteria for serious illness in 2016 and died in 2017 or 2018, 522 737 (54.7%) were women, 764 666 (80.0%) were 75 years or older, and 822 684 (86.1%) were non-Hispanic White individuals. Among the study population, 81 131 (8.5%) had a timely ACP visit, and an additional 22 804 (2.4%) had a late ACP visit. After multivariable adjustment, compared with patients without any billed ACP visit, patients with a timely ACP visit experienced significantly less intensive EOL care on 4 of 5 measures, including in-hospital death (adjusted odds ratio [aOR], 0.85; 95% CI, 0.84-0.87), hospital admission (aOR, 0.84; 95% CI, 0.83-0.85), intensive care unit admission (aOR, 0.87; 95% CI, 0.85-0.88), and emergency department visit (OR, 0.83; 95% CI, 0.82-0.84). Only small or insignificant differences in late hospice use or mean total EOL expenditures were noted. Compared with patients without ACP, patients with late ACP experienced more intensive EOL care, including in-hospital death (aOR, 1.22; 95% CI, 1.19-1.26), hospital admission (aOR, 5.28; 95% CI, 5.07-5.50), intensive care unit admission (aOR, 1.57; 95% CI, 1.53-1.62), and emergency department visit (aOR, 3.87; 95% CI, 3.72-4.02).Conclusions and relevanceIn this cohort study of US Medicare beneficiaries, billed ACP services during the EOL course of patients with serious illness were relatively uncommon, but if they occurred before the last month of life, they were associated with less intensive use of EOL services. Further research on the variables affecting hospice use and expenditures in the EOL period and the differential effect of late ACP is recommended to understand the relative role of ACP in achieving goal-concordant care.

Dataset Information

Precipitation and primary health care visits for gastrointestinal illness in Gothenburg, Sweden.

Publications

Precipitation and primary health care visits for gastrointestinal illness in Gothenburg, Sweden.

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