Measurement Equivalence of the Mindfulness Scale (FFQM) in light of The Varying Proportion of Missing Data

Abstract

This study aimed to investigate the effect of changing the percentage of missing data (5%, 15%, 30%) on the factorial equivalence of the mindfulness scale with its three types: configural, metric and scalar. To achieve the objectives of the study, the mindfulness scale was applied, consisting of (39) five-point scaled items distributed over (5) Factors on the total study sample of (1440) male and female students from the universities of (Yarmouk,Al  Al-Bayt, Jordanian Science and Technology), to verify factorial equivalence across the groups, The sample was randomly divided into three equal groups, amounting to (480) male and female students for each group. The conformity of each of the three groups was verified, and then the missing  percentages (5%, 15%, 30%) were conducted for the three groups, respectively. The results of the study showed that the data matches the proposed theoretical model, and the scale consists of (5) factors. The results showed that configura, metric and scalar factor equivalence was achieved between the first and second groups with missing  rates (5%, 15%), while all types of factor equivalence were not achieved, including configura, for the group with a percentage (30%).