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Weaver AM, Parveen S, Goswami D, Crabtree-Ide C, Rudra C, Yu J, Mu L, Fry AM, Sharmin I, Luby SP, Ram PK. Pilot Intervention Study of Household Ventilation and Fine Particulate Matter Concentrations in a Low-Income Urban Area, Dhaka, Bangladesh. Am J Trop Med Hyg 2017; 97:615-623. [PMID: 28722632 DOI: 10.4269/ajtmh.16-0326] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Fine particulate matter (PM2.5) is a risk factor for pneumonia; ventilation may be protective. We tested behavioral and structural ventilation interventions on indoor PM2.5 in Dhaka, Bangladesh. We recruited 59 good ventilation (window or door in ≥ 3 walls) and 29 poor ventilation (no window, one door) homes. We monitored baseline indoor and outdoor PM2.5 for 48 hours. We asked all participants to increase ventilation behavior, including opening windows and doors, and operating fans. Where permitted, we installed windows in nine poor ventilation homes, then repeated PM2.5 monitoring. We estimated effects using linear mixed-effects models and conducted qualitative interviews regarding motivators and barriers to ventilation. Compared with poor ventilation homes, good ventilation homes were larger, their residents wealthier and less likely to use biomass fuel. In multivariable linear mixed-effects models, ventilation structures and opening a door or window were inversely associated with the number of hours PM2.5 concentrations exceeded 100 and 250 μg/m3. Outdoor air pollution was positively associated with the number of hours PM2.5 concentrations exceeded 100 and 250 μg/m3. Few homes accepted window installation, due to landlord refusal and fear of theft. Motivators for ventilation behavior included cooling of the home and sunlight; barriers included rain, outdoor odors or noise, theft risk, mosquito entry, and, for fan use, perceptions of wasting electricity or unavailability of electricity. We concluded that ventilation may reduce indoor PM2.5 concentrations but, there are barriers to increasing ventilation and, in areas with high ambient PM2.5 concentrations, indoor concentrations may remain above recommended levels.
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Affiliation(s)
- Anne M Weaver
- Richard M. Fairbanks School of Public Health, Indiana University, Indianapolis, Indiana.,Department of Epidemiology and Environmental Health, University at Buffalo, Buffalo, New York
| | - Shahana Parveen
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Doli Goswami
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Christina Crabtree-Ide
- Department of Epidemiology and Environmental Health, University at Buffalo, Buffalo, New York
| | - Carole Rudra
- Department of Epidemiology and Environmental Health, University at Buffalo, Buffalo, New York
| | - Jihnhee Yu
- Department of Biostatistics, University at Buffalo, Buffalo, New York
| | - Lina Mu
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Alicia M Fry
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Iffat Sharmin
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Stephen P Luby
- Stanford University, Stanford, California.,International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Pavani K Ram
- Department of Epidemiology and Environmental Health, University at Buffalo, Buffalo, New York
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Yoo E, Rudra C, Glasgow M, Mu L. Geospatial Estimation of Individual Exposure to Air Pollutants: Moving from Static Monitoring to Activity-Based Dynamic Exposure Assessment. ACTA ACUST UNITED AC 2015. [DOI: 10.1080/00045608.2015.1054253] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Han D, Bonner MR, Nie J, Rudra C, Freudenheim JL. The use of birth certificate data to reconstruct and validate self-reported birth address in a study of breast cancer and environment. Ann Epidemiol 2011; 21:710-3. [PMID: 21737307 DOI: 10.1016/j.annepidem.2011.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Revised: 04/18/2011] [Accepted: 05/01/2011] [Indexed: 11/16/2022]
Abstract
PURPOSE We conducted a study comparing the location of addresses recorded on birth certificates with self-reported birth addresses provided by adults who were participants in the Western New York Exposure and Breast Cancer (WEB) Study. We also evaluated whether birth certificate residence data may be used to reconstruct missing self-reported birth residence information. METHODS Subjects were selected from WEB study participants born in Western New York State between 1920 and 1964 for whom we were able to obtain a New York State birth certificate. Addresses were geocoded and mean distance and SD between self-reported and certificate addresses were calculated. RESULTS Our findings indicate good agreement between self-reported and birth certificate addresses (77% are within 0.25 mile difference), and no difference in recall for cases compared with controls. CONCLUSIONS This study provides evidence that self-reported and birth certificate-based addresses may be used together to achieve increased accuracy of historical records in early life when place of birth is used as a proxy for early life environment in relation to the development of breast cancer or other chronic diseases.
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Affiliation(s)
- Daikwon Han
- Department of Epidemiology and Biostatistics, Texas A&M Health Science Center, College Station, TX 77843, USA.
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Abetew D, Enquobahrie D, Dishi-Galitzky M, Rudra C, Miller R, Williams M. 553: Associations of age at menarche and menstrual characteristics with risk of preeclampsia. Am J Obstet Gynecol 2011. [DOI: 10.1016/j.ajog.2010.10.573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
A predominance of small, dense low-density lipoproteins (LDL) is characteristic of the dyslipidemic state seen in type 2 diabetes. However, no study has investigated the association in gestational diabetes mellitus (GDM), which is pathophysiologically similar to type 2 diabetes. We hypothesized that LDL particle size is reduced in GDM cases compared with controls. Gradient gel electrophoresis was used to characterize LDL subclass phenotypes in non-fasting intrapartum plasma from 105 GDM cases and 96 controls. All participants were free of pre-existing diabetes or hypertension. The authors used logistic regression to estimate odds ratios (OR) and 95 % confidence intervals (CI) adjusted for confounders. Women with this phenotype had a significant 4.9-fold (95 % CI: 1.1-23.2) increased risk of GDM compared with those with the large, buoyant phenotype. The magnitude of this association was attenuated when plasma triglyceride and other confounders were included in the model (OR=4.2, 95 % CI: 0.5-39.5). Mean LDL particle size in GDM cases was smaller compared with controls (270.1 vs. 272.7A, p=0.003). The OR of GDM risk was 1.8 (95 % CI: 0.9-3.3) for every 10-A reduction in LDL particle size. Large prospective studies are needed to evaluate the association between smaller LDL particle size in early pregnancy with subsequent GDM risk.
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Affiliation(s)
- C Qiu
- Swedish Medical Center (Center for Perinatal Studies), Seattle, USA.
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