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Table 2 Summary of latent factor loading and proportion of variance for the PROMIS-29 2-factor EFA

From: Exploratory factor analysis of PROMIS-29 V1.0, PROMIS Global Health and the RAND SF-36 from chiropractic responders attending care in a practice-based research network

  Factor 1 Factor 2
SS loadings 7.011 1.645
Proportion—variance 0.242 0.238
Cumulative—variance 0.242 0.480