Table 4.

Items reported to be not relevant or problematic by ≥25% of participants interviewed for the Pain Interference or Sleep Disturbance item banks

Item	Not relevant, n	Reported problems, n	Reported problems or not relevant, n
Pain interference item bank (N = 20)
PAININ1: How difficult was it for you to take in new information because of pain?	7	3	8
PAININ49: How much did pain interfere with your ability to remember things?	7	0	7
PAININ51: How often did pain prevent you from sitting for more than 10 min?	7	0	7
PAININ11: How often did you feel emotionally tense because of your pain?	4	2	5
Sleep disturbance item bank (N = 12)
SLEEP65: I felt physically tense at bedtime	7	6	9
SLEEP70: I felt sad at bedtime	7	1	8
SLEEP72: I tried hard to get to sleep	4	3	6
SLEEP67: I worried about not being able to fall asleep	5	0	5
SLEEP68: I felt worried at bedtime	4	0	4
SLEEP93: I was afraid I would not get back to sleep after waking up	4	0	4
SLEEP20: I had a problem with my sleep	1	3	4
SLEEP45: I laid in bed for hours waiting to fall asleep	3	0	3
SLEEP116: My sleep was refreshing	1	2	3
SLEEP125: I felt lousy when I woke up	1	2	3

Participants could report that an item was problematic and not relevant; columns are not mutually exclusive and values represent the number of unique participants reporting problematic and/or relevant items. PROMIS items© 2008–2021; reprinted with permission, David Cella