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. Author manuscript; available in PMC: 2023 Jun 1.
Published in final edited form as: Optom Vis Sci. 2022 Apr 12;99(6):513–520. doi: 10.1097/OPX.0000000000001901

Appendix Table A1.

Dimensionality Analysis of the Child IXT Symptom Questionnaire

Child IXT Symptoms (7 items)
Eigen %
Total raw variance 10.0 100
Explained by measures 3.0 30
  Explained by persons 1.3 13
  Explained by items 1.8 18
Total unexplained 7.0 70
  1st contrast 1.4 14
  2nd contrast 1.2 12
  3rd contrast 1.2 12
  4th contrast 1.1 11
  5th contrast 1.1 11
Item Number 1st Contrast Loading
1 0.23
2 0.17
3 −0.30
4 −0.61
5 0.83
6 −0.13
7 −0.35