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Table 2 Descriptive data for the Malocclusion Impact Questionnaire [MIQ] and the Child Perceptions Questionnaire [CPQ11–14]

From: Cross-cultural adaptation and validation in spanish of the malocclusion impact questionnaire (MIQ)

Scale Number of items Observed range Median [IQR] Mean [SD] Percent floor [%] Percent ceiling [%] Cronbach’s alpha
MIQ total score 17 0–31 7 [8] 8.3 [6.0] 4.1 0.0 0.85
CPQ11–14 total score 37 2–96 30 32.8 [17.9] 0.0 0.0 0.89
Oral symptoms 6 0–21 7 [6] 7.1 [3.7] 2.3 0.0 0.62
Functional limitations 9 0–23 7 [8] 8.3 [5.7] 3.2 0.0 0.74
Emotional well-being 9 0–32 8 [9] 8.7 [6.1] 4.6 0.0 0.80
Social well-being 13 0–36 7 [10] 8.7 [7.0] 6.4 0.0 0.78
  1. Floor effect: percentage of patients with minimum score; Ceiling effect: percentage of patients with maximum score
  2. IQR Interquartile range, SD standard deviation