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. Author manuscript; available in PMC: 2024 Feb 15.
Published in final edited form as: J Neurosci Methods. 2023 Jan 16;386:109795. doi: 10.1016/j.jneumeth.2023.109795

Table 3.

Exploratory item-factor and Multidimensional IRT (MIRT) analyses of crowdsourced SVOLT v1 responses.

Oblimin Rotation Promax Rotation
EFA (tetrachorics) Exploratory MIRT EFA (tetrachorics) Exploratory MIRT
Item F1 F2 F1 F2 F1 F2 F1 F2
SVOLT_QID013_CORR 0.621 0.616 0.638 0.633
SVOLT_QID014_CORR 0.566 0.613 0.539 0.605
SVOLT_QID015_CORR 0.546 0.574 0.549 0.583
SVOLT_QID010_CORR 0.425 0.418 0.420 0.426
SVOLT_QID018_CORR 0.415 0.443 0.416 0.454
SVOLT_QID005_CORR 0.400 0.397 0.426 0.415
SVOLT_QID004_CORR 0.361 0.338 0.381 0.351
SVOLT_QID008_CORR 0.348 0.342 0.345 0.347
SVOLT_QID002_CORR 0.294 0.332 0.285 0.329
SVOLT_QID020_CORR 0.348 0.274 0.356 0.271
SVOLT_QID019_CORR 0.775 0.793 0.794 0.811
SVOLT_QID006_CORR 0.749 0.772 0.767 0.779
SVOLT_QID009_CORR 0.698 0.701 0.714 0.705
SVOLT_QID017_CORR 0.684 0.698 0.259 0.701 0.715
SVOLT_QID011_CORR 0.679 0.712 0.695 0.720
SVOLT_QID012_CORR 0.534 0.592 0.546 0.587
SVOLT_QID003_CORR 0.508 0.481 0.519 0.475
SVOLT_QID016_CORR 0.384 −0.268 0.398 0.392 0.383
SVOLT_QID007_CORR 0.352 −0.274 0.339 0.359 −0.254 0.323
SVOLT_QID001_CORR 0.348 0.284 0.356 0.276

Note: The inter-factor correlation for the Exploratory Item-Factor and Multidimensional IRT analyses are −0.06 and −0.062 with oblimin rotation and −0.225 and −0.198 with promax rotation, respectively. Loadings < 0.25 removed.