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Table 4 Diagnosed sIBM patients / 5 years from reply-paid postcard Questionnaire

From: The updated retrospective questionnaire study of sporadic inclusion body myositis in Japan

Term (year) Sent Cards Reply Reply ratio (%) Diagnosed patients / 5 years
2005–2009 4857 1253 25.8 286
2011–2015 5500 1316 23.9 384