Since Δχ 2 is easily affected by the sample size, when the sample size is greater than 300, the p value of Δχ 2 in the study was likely to be significant, so the ΔCFI value was less than or equal to 0.01 and the ΔRMSEA value is less than or equal to 0.015 to judge whether there was a significant difference [ 43 , 44 ].
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The Chinese version of the Oral Health Impact Profile-14 (OHIP-14) questionnaire among college students: factor structure and measurement invariance across genders.
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