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Hanaki N, Yamashita K, Kunisawa S, et al. Effect of the number of request calls on the time from call to hospital arrival: a cross-sectional study of an ambulance record database in Nara prefecture, Japan. BMJ Open 2016;6:e012194.
The baseline patient characteristics were compared using analysis of variance (ANOVA), not the Kruskal–Wallis test. Therefore the corrected Table 1 footnote should read:
*P-value by ANOVA
†P-value by Student's t-test
SD: standard deviation, Qu: quartile, ACS: acute coronary syndromes, CPA: Cardiopulmonary arrest,
DOC: disturbance of consciousness, request call: request call to hospital for transportation
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