Assertion: insomnia | /r/CapableOf | last for at least 30 days8
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Source sentences:
text: the general U.S. population suffers from insomnia; about 10-15 percent of all U.S. adults report having severe and chronic insomnia that affects their daytime functioning6, 7, (defined, in this study, as insomnia that lasted for at least 30 days8).