10.5061/DRYAD.1K01D
Shibata, Yosuke
Hamamatsu University School of Medicine
Ojima, Toshiyuki
Hamamatsu University School of Medicine
Tomata, Yasutake
Tohoku University
Okada, Eisaku
Hamamatsu University School of Medicine
Nakamura, Mieko
Hamamatsu University School of Medicine
Kawado, Miyuki
Fujita Health University
Hashimoto, Shuji
Fujita Health University
Data from: Characteristics of pneumonia deaths after earthquake and
tsunami: an ecological study of 5.7 million subjects in 131
municipalities, Japan
Dryad
dataset
2016
2016-02-03T18:39:36Z
2016-02-03T18:39:36Z
en
https://doi.org/10.1136/bmjopen-2015-009190
235726 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Objective: On 11 March 2011, the Great East Japan Earthquake struck off
Japan. Although some studies showed that the earthquake increased the risk
of pneumonia death, no study reported whether and how much tsunami
increased the risk. We examined the risk for pneumonia death after the
earthquake/tsunami. Design: This is an ecological study. Setting: Data on
population and pneumonia deaths obtained from the Vital Statistics 2010
and 2012, National Census 2010 and Basic Resident Register 2010 and 2012
in Japan. Participants: About 5.7 million subjects residing in Miyagi,
Iwate and Fukushima Prefectures during 1 year after the disaster were
targeted. All municipalities (n=131) were categorized into inland (n=93),
that is, the earthquake-impacted area, and coastal types (n=38), that is,
the earthquake- and tsunami-impacted area. Outcome measures: The number of
pneumonia deaths per week was totaled from 12 March 2010 to 9 March 2012.
The number of observed pneumonia deaths (O) and the sum of the sex- and
age-classes in the observed population multiplied by the sex- and
age-classes of expected pneumonia mortality (E) were calculated. Expected
pneumonia mortality was the pneumonia mortality during the year before.
Standardized mortality ratios (SMRs) were calculated for pneumonia deaths
(O/E), adjusting for sex and age using the indirect method. SMRs were then
calculated by coastal and inland municipalities. Results: Six thousand six
hundred three subjects died of pneumonia during 1 year after the
earthquake. SMRs significantly increased during the 1st to 12th week. In
the 2nd week, SMRs in coastal and inland municipalities were 2.49 (95% CI
2.02 to 7.64) and 1.48 (95% CI 1.24 to 2.61), respectively. SMRs of
coastal municipalities were higher than those of inland municipalities.
Conclusions: Earthquake increased the risk of pneumonia death and tsunamis
additionally increased the risk.
SMRs for pneumonia deathDataset containing area, week from earthquake,
observed number of pneumonia deaths, expected number of pneumonia deaths,
standardized mortality ratios and p valueSMRs.xlsx