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Table 3 Distribution of means, standard deviations, medians, interquartile ranges, and percentile ranks for the Muscle Dysmorphic Disorder Inventory (MDDI) among gender-expansive people, transgender men, and transgender women from The PRIDE Study

From: Community norms of the Muscle Dysmorphic Disorder Inventory (MDDI) among gender minority populations

  Gender-Expansive People (N = 1023) Transgender Men (N = 326) Transgender Women (N = 177)
  MDDI DFS MDDI AI MDDI FI MDDI Total MDDI DFS MDDI AI MDDI FI MDDI Total MDDI DFS MDDI AI MDDI FI MDDI Total
M (SD) 8.3 (3.9) 12.8 (4.0) 6.1 (3.1) 27.2 (6.7) 10.7 (4.5) 13.2 (4.0) 6.6 (3.3) 30.5 (7.5) 6.1 (2.2) 13.0 (4.0) 5.5 (2.6) 24.6 (5.7)
Range 5–24 4–20 4–20 13–56 5–25 4–20 4–20 13–57 5–22 4–20 4–16 14–43
Percentile rank
 5 5.0 6.0 4.0 17.0 5.0 6.0 4.0 20.0 5.0 6.0 4.0 16.0
 10 5.0 7.0 4.0 19.0 5.0 7.5 4.0 22.0 5.0 7.0 4.0 18.0
 15 5.0 8.0 4.0 20.0 6.0 9.0 4.0 23.0 5.0 9.0 4.0 19.0
 20 5.0 9.0 4.0 21.0 7.0 10.0 4.0 25.0 5.0 10.0 4.0 20.0
 25 5.0 10.0 4.0 22.0 7.0 10.3 4.0 25.0 5.0 10.0 4.0 21.0
 30 5.0 11.0 4.0 23.0 8.0 11.0 4.0 26.0 5.0 11.0 4.0 21.0
 35 6.0 11.0 4.0 24.0 8.0 12.0 4.0 27.0 5.0 11.0 4.0 22.0
 40 6.0 12.0 4.0 25.0 9.0 12.0 4.0 28.0 5.0 11.4 4.0 22.4
 45 7.0 12.0 4.0 26.0 9.0 13.0 4.3 29.0 5.0 12.0 4.0 23.0
 50 7.0 13.0 4.0 27.0 10.0 13.0 5.0 30.0 5.0 13.0 4.0 24.0
 55 8.0 14.0 5.0 27.0 11.0 14.0 6.0 31.0 5.0 13.0 4.0 25.0
 60 8.0 14.0 5.0 28.0 12.0 14.0 6.0 31.0 5.0 14.0 4.0 25.6
 65 9.0 15.0 6.0 29.0 12.0 15.0 7.0 33.0 6.0 15.0 5.0 26.0
 70 9.0 15.0 7.0 30.0 12.0 16.0 8.0 33.5 6.0 15.2 5.0 27.0
 75 10.0 16.0 8.0 31.0 13.0 17.0 8.0 35.0 7.0 16.0 6.0 28.0
 80 11.0 17.0 8.0 32.0 14.0 17.0 9.0 36.0 7.0 17.0 6.8 29.0
 85 12.0 17.0 9.0 34.0 15.0 18.0 10.0 38.0 8.0 18.0 8.0 31.0
 90 14.0 18.0 11.0 37.0 17.5 18.0 11.0 41.0 8.0 18.4 9.4 31.4
 95 16.0 19.0 13.0 39.0 20.0 19 13.0 44.8 9.0 19.0 12.0 34.2
 99 21.0 20.0 16.0 45.0 23.8 20.0 17.8 48.8 15.2 20.0 16.0 40.2
  1. MDDI Muscle Dysmorphic Disorder Inventory, MDDI DFS MDDI Drive for Size subscale, MDDI AI MDDI Appearance Intolerance subscale, MDDI FI MDDI Functional Impairment subscale, M Mean, SD standard deviation