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Table 8 Single Step Questionnaire: exploratory factor analysis

From: Translation and psychometric evaluation of the Swedish versions of the Nuss Questionnaire modified for Adults and the Single Step Questionnaire

Factor 1 2 3
Eigenvalue 4.69 1.18 1.04
Explained variance, cumulative (%) 39.07 48.87 57.5
Item Loadings
5 .99 −.09 −.14
14 .93 −.02 −.07
15 .82 −.16 .16
4 .61 .15 −.36
16 .51 .12 .13
12 −.11 .81 −.10
11 −.02 .79 −.22
1 .09 .52 .30
2 .07 .51 .24
3 −.31 −.15 .86
8–9 .27 −.07 .64
7 .29 .19 .50
  1. SSQ item 6, 10 and 13 excluded after exploratory factor analysis exploration
  2. Loadings ≥ .40 are bolded and were considered to contribute to a factor