highly significantp < 0.001
However, factorability of the correlation matrix was excellent: the Kaiser–Meyer–Olkin (KMO) measure of sampling adequacy was 0.919 (item MSA values all > 0.70 ), and Bartlett's test of sphericity was highly significant ( p < 0.001 ) , confirming that the inter‐item correlations were appropriate for factor analysis.:contentReference [oaicite:1]index = 1.