List of Items Included in Confirmatory Factor Analysis.

Item Bank Version	Domain	Form	Item Names (in the Order They Appear on the Published Forms)
PROMIS Item Bank v1.0	Anxiety	Short Form 4a	{EDANX01, EDANX40, EDANX41, EDANX53}
	Depression	Short Form 4a	{EDDEP04, EDDEP06, EDDEP29, EDDEP41}
	Fatigue	Short Form 4a	{HI7, AN3, FATEXP41, FATEXP40}
	Illness Impact – Negative	Short Form 8a	{II50.a, II59.a, II67.a, II81.a, II54.a, II58.a, II71.a, II80.a}
	Illness Impact – Positive	Short Form 8a	{II2.a, II17.a, II27.a, II36.a, II7.a, II15.a, II32.a, II35.a}
	Pain Interference	Short Form 4a	{PAININ9, PAININ22, PAININ31, PAININ34}
	Sleep Disturbance	Short Form 4a	{SLEEP109**, SLEEP116**, SLEEP20, SLEEP44}
	Sleep Related Impairment	Short Form 8a	{SLEEP10, SLEEP119**, SLEEP18, SLEEP25, SLEEP27, SLEEP30, SLEEP6, SLEEP7}
PROMIS Item Bank v2.0	Physical Function	Short Form 4a	{PFA11**, PFA21**, PFA23**, PFA53**}
PROMIS Scale v1.0	Gastrointestinal Bowel Incontinence	Form 4a	{GISX45, GISX46, GISX47, GISX48}
	Gastrointestinal Diarrhea	Form 6a	{GISX38, GISX40, GISX41, GISX42, GISX43, GISX44}
PROMIS Sex Function and Satisfaction (SexFS) v1.0	Interest in Sexual Activity	Four Items	{SFINT101, SFINT102, SFINT103, SFINT104}
	Orgasm	Three Items	{SFORG101**, SFORG150**, SFORG151**}
PROMIS SexFS v2.0	Erectile Function	Three Items	{SFEFN201**, SFEFN202**, SFEFN204**}
	Global Satisfaction with Sex Life	Four Items	{SFSAT101, SFSAT102, SFSAT201, SFSAT105}

Note: The abovementioned PROMIS measures and their scoring manuals (except for PROMIS SexFS v2.0 measures) are available at http://www.healthmeasures.net/search-view-measures. See Weinfurt et al. [29] for the development of PROMIS SexFS v2.0. Erectile Function domain (SexFS v2.0) has four items but only three were used in the current study because the omitted item only appeared under the phone mode.

Items labeled with a ‘**’ symbol are reverse-worded items whose higher categories indicate lower levels on the measured domain.