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(0) My sleeping habits have not changed. (0)
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(1a) I sleep a little more than usual. (1)
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(1b) I sleep a little less than usual. (2)
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(2a) I sleep much more than usual. (3)
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(2b) I sleep much less than usual. (4)
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(3a) I sleep most of the day. (5)
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(3b) I wake up 1-2 hours earlier than usual and can't get back to sleep. (6)
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(777) Don't know (777)
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(888) Does not apply (888)
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(999) Unknown (999)
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(J) jump allowed (99983)