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Table 2 MyPOS principal component pattern matrix with Promax rotation, forced extraction of three components, missing data excluded pairwise (n = 380)

From: Improving the assessment of quality of life in the clinical care of myeloma patients: the development and validation of the Myeloma Patient Outcome Scale (MyPOS)

Abbreviated item wordingsa Components Corrected item-total correlation
  (1) Symptoms & function (2) Emotional response (3) Healthcare support  
Pain .62 .08 -.01 .58
Fatigue or lack of energy .80 .01 -.17 .59
Shortness of breath .59 .01 -.17 .40
Diarrhoea .25 .15 -.14 .25
Constipation .45 -.14 .15 .34
Nausea .45 .11 .05 .47
Vomiting .39 -.07 .04 .28
Mouth problems .30 .27 -.19 .36
Poor mobility .88 -.15 -.01 .62
Tingling in the hands and/or feet .47 -.18 .06 .28
Difficulty remembering things .40 .20 -.20 .39
Usual activities without help from others .74 .04 .04 .66
Hobbies and leisure activities .74 .00 .07 .66
Quality time with family and friends .58 -.03 .18 .54
Worry about sex life -.30 .74 -.21 .26
Feeling depressed .17 .53 .06 .59
Anxious or worried about illness or treatment .13 .63 .16 .65
Worry about infections .11 .55 -.04 .46
Worry about physical appearance -.06 .64 .06 .44
Worry about financial situation -.12 .73 .05 .45
Worry that illness will get worse .05 .67 .15 .60
Able to cope with your illness and treatment .33 .39 .14 .63
Doctors or nurses – contact if needed .01 .04 .66 .36
Doctors and nurses – knowledge and skill -.06 -.04 .86 .33
Doctors and nurses – care and respect -.14 -.00 .81 .28
Enough information about illness and treatment -.05 .02 .60 .32
Enough information about the future .22 -.02 .49 .43
Eigenvalue 7.34 2.15 1.64 -
Percentage variance explained 27.2 8.0 6.1 -
Cumulative percentage variance explained 27.2 35.1 41.2 -
  1. aFull item wordings are shown Additional file 1: Table S5.
  2. Figures in bold indicate loadings ≥ .30.
  3. Figures in italics indicate the component/subscale to which each item is assigned.