Validation of the M. D. Anderson Symptom Inventory multiple myeloma module

Table 3 Criterion validity: MDASI-MM items compared with individual items or relevant subscales from the QLQ-C30 and QLQ-MY20 ( n = 55)

MDASI-MM individual symptom items	QLQ C-30 and QLQ MY-20 question number(s)^a(subscale)	Pearson’s correlation^b
Pain	Q-9, 19 (QLQ C-30 pain subscale)	0.76^c
Fatigue	Q-10, 12, 18 (QLQ C-30 fatigue subscale)	0.75^c
Nausea	Q-14	0.77^c
Shortness of breath	Q-8	0.67^c
Difficulty remembering	Q-25	0.75^c
Lack of appetite	Q-13	0.66^c
Dry mouth	Q-40	0.86^c
Numbness	Q-43	0.66^c
Constipation	Q-16	0.75^c
Diarrhea	Q-17	0.71^c
Bone aches	Q-31	0.69^c

^a Numbered questions: Q-9: Have you had pain?; Q-19: Did pain interfere with your daily activities?; Q-10: Did you need to rest?; Q-12: Have you felt weak?; Q-18: Were you tired?; Q-14: Have you felt nauseated?; Q-8: Were you short of breath?; Q-25: Have you had difficulty remembering things?; Q-13: Have you lacked appetite?; Q-40: Have you had a dry mouth; Q-43: Did you have tingling hands or feet?; Q-16: Have you been constipated?; Q-17: Have you had diarrhea?; Q-31: Have you had bone aches or pain?
^b Spearman’s correlations demonstrated similar magnitude as Pearson’s correlations.
^c Significant at P < .001.

ISSN: 1756-8722