Key result
The Great East Japan Earthquake did not significantly increase the overall annual incidence of AMI in Fukushima prefecture (38.9 vs 37.2 and 38.5 per 100,000; P=0.581), except in the Iwaki district.
Why the study?
Does exposure to the Great East Japan Earthquake increase the incidence of acute myocardial infarction in Fukushima prefecture?
Observational (n=3,068)
Yes
Does exposure to the Great East Japan Earthquake increase the incidence of acute myocardial infarction in Fukushima prefecture?
p-value: p=0.581
The Great East Japan Earthquake was associated with a localized increase in AMI incidence in the Iwaki district, but not across the entire Fukushima prefecture.
No overall AMI rise supports avoiding broad post-disaster surveillance in Fukushima; leaves open district-specific risks for targeted investigation.
OBJECTIVE: The incidence of cardiovascular disease (CVD) reportedly increases following a huge disaster. On March 11, 2011, the Great East Japan Earthquake hit a large area of eastern Japan. In Fukushima prefecture, many people suffered from the consequences of the earthquake, the subsequent tsunami, and especially the Fukushima Daiichi Nuclear Power Plant accident. We assessed whether the incidence of acute myocardial infarction (AMI) increased after the earthquake. METHODS: We enrolled AMI patients admitted to 36 hospitals in Fukushima prefecture between March 11, 2009, and March 10, 2013 (n = 3068). We compared the incidence of AMI after the earthquake for more than 3 months and 1 year with that in the control years. RESULTS: The incidence of Fukushima's annual AMI patients (per 100 000 persons) in 2011 was similar to that of previous years (n = 38.9 [2011] vs 37.2 [2009] and 38.5 [2010], P = .581). However, a significantly higher incidence of AMI was found in the Iwaki district after the disaster that corresponded to the 1-year period of observation (n = 38.7 [2011] vs 27.3 [2009] and 32.8 [2010], P = .045). CONCLUSION: The Great East Japan Earthquake affected the incidence of AMI only in limited areas of Fukushima prefecture.
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Yamaki et al. (2014) conducted an observational in Acute Myocardial Infarction (n=3,068). Great East Japan Earthquake vs. Control years (2009 and 2010) was evaluated on Annual incidence of AMI per 100,000 persons (p=0.581). The Great East Japan Earthquake did not significantly increase the overall annual incidence of AMI in Fukushima prefecture (38.9 vs 37.2 and 38.5 per 100,000; P=0.581), except in the Iwaki district.
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