5986
During a median follow - up period of 35 years ( range , 11 - 41 years ) , 8030 subjects sustained at least one fracture , increasing the risk of death 1 . 8 times ( 95 % CI , 1 . 6 - 2 . 0 ) during follow up .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None