Sx freq: too little/too much sleep (e4c2, non-communicative)

SAS Name
FREQ_SLEEP_TROUBLE_NC 

Over the last 2 weeks, how often did the patient/resident have trouble falling or staying asleep, or sleeping too much?

Code Code value
0 Never or 1 day
1 2-6 days (several days)
2 7-11 days (half or more of the days)
3 12-14 days (nearly every day)
9 Unknown or unable to assess
-7 Skipped correctly