several tests should be used to assess the suitability of the respondent data for factor analysis. These tests include Kaiser-Meyer-Olkin (KMO) Measure of Sampling Adequacy,18,19 and Bartlett's Test of Sphericity.20 The KMO index, in particular, is recommended when the cases to variable ratio are less than 1:5. The KMO
index ranges from 0 to 1, with 0.50 considered suitable for factor analysis.9,10 The Bartlett's Test of Sphericity should be significant (p