1.Investigation on under-reported deaths in Xuanwei Yunnan province, during 2011-2013.
Gongbo CHEN ; Hecang HUANG ; Xiangyun MA ; Bofu NING ; Hongyan REN ; Xia WAN ; Xiaonong ZOU ; Gonghuan YANG
Chinese Journal of Preventive Medicine 2015;49(6):541-545
OBJECTIVETo evaluate the completeness of the death registration system, so as to understand the death patterns in Xuanwei.
METHODSThe investigation on under-reported deaths was conducted in 30 villages selected with a multi-stage random sampling strategy. Participants were asked about changes of their family members (family members born or dead) during past 3 years with door to door visit. Then, death cases obtained in our investigation were matched with those from routine death registration system and under-reported rate of deaths during 2011-2013 was calculated employing capture-recapture method.
RESULTSTotal under-reported rate of deaths was 31.88%. For people aged between 0-14, 15-39, 40-69 and 60 above, under-reported rates of death were 33.35%, 34.93%, 29.10%, and 32.88%, respectively. And they were 31.72% and 32.02% for males and females, respectively. There was no significant difference shown in under-reported rates among deaths in different age groups (χ² = 7.24, P = 0.065) and genders (χ² = 0.06, P = 0.803). The under-reported rates in high-mortality, medium-mortality and low-mortality regions were 17.48%, 38.01%, and 36.22%, respectively with a significant difference (χ² = 213.25, P < 0.001). Death in local regions with mortality rate higher than 600.00/10(5), between 400.00/10⁵ and 600.00/10⁵ and lower than 400.00/10⁵ were adjusted with under-reported rates in three regions above respectively. The total adjusted morality rate in Xuanwei during 2011-2013 was 776.47/10⁵. For males and females, they were 918.73/10⁵ and 617.46/10⁵, respectively.
CONCLUSIONOverall under-reported rate of death was high in death registration system in Xuanwei. It was necessary to adjust mortality data reported with under-reported rate of death to estimate death patterns in this area.
China ; Data Accuracy ; Death Certificates ; Female ; Humans ; Male ; Mortality ; Registries
2.Acute effect of ambient fine particulate matter on heart rate variability: an updated systematic review and meta-analysis of panel studies.
Zhiping NIU ; Feifei LIU ; Baojing LI ; Na LI ; Hongmei YU ; Yongbo WANG ; Hong TANG ; Xiaolu CHEN ; Yuanan LU ; Zilu CHENG ; Suyang LIU ; Gongbo CHEN ; Yuxiao ZHANG ; Hao XIANG
Environmental Health and Preventive Medicine 2020;25(1):77-77
BACKGROUND:
Decreased heart rate variability (HRV) is a predictor of autonomic system dysfunction, and is considered as a potential mechanism of increased risk of cardiovascular disease (CVD) induced by exposure to particulate matter less than 2.5 μm in diameter (PM
METHODS:
An updated systematic review and meta-analysis of panel studies till November 1, 2019 was conducted to evaluate the acute effect of exposure to ambient PM
RESULTS:
A total of 33 panel studies were included in our meta-analysis, with 16 studies conducted in North America, 12 studies in Asia, and 5 studies in Europe. The pooled results showed a 10 μg/m
CONCLUSION
Short-term exposure to PM
Adult
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Aged
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Aged, 80 and over
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Air Pollutants/analysis*
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Air Pollution/analysis*
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Female
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Heart Rate/drug effects*
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Humans
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Male
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Middle Aged
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Particulate Matter/analysis*
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Young Adult