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Table 1 Mean variables (± SD) measured on pelvic CT sections in the prospective trauma cohort (n = 344), stratified by gender

From: Prevalence of sacral dysmorphia in a prospective trauma population: Implications for a "safe" surgical corridor for sacro-iliac screw placement

Variable Male patients (n= 245) Female patients (n= 99) Statistical test applied P-value
Age 36.9 ± 12.98 36.8 ± 14.71 Mann-Whitney-U 0.584
S1FAC 17.85 ± 2.71 16.18 ± 2.21 Student's t-test <0.001
S2FAC 11.83 ± 2.34 10.78 ± 2.09 Student's t-test <0.001
TS1BHT 46.74 ± 9.12 43.10 ± 8.87 Mann-Whitney-U <0.001
SS1BHT 23.19 ± 3.91 21.17 ± 3.41 Mann-Whitney-U <0.001
S1SAG.mean 31.39 ± 3.56 28.97 ± 4.11 Mann-Whitney-U <0.001
TS2BHT 32.82 ± 6.96 29.73 ± 5.71 Mann-Whitney-U <0.001
SS2BHT 16.10 ± 3.63 15.13 ± 3.80 Mann-Whitney-U <0.001
S2SAG.mean 25.48 ± 3.94 23.79 ± 3.68 Mann-Whitney-U <0.001
ANGLE1A 20.07 ± 3.21 17.31 ± 2.80 Student's t-test <0.001
ANGLE1C 19.38 ± 3.28 18.23 ± 4.26 Mann-Whitney-U <0.001
ANGLE2A 13.56 ± 2.97 11.97 ± 2.37 Mann-Whitney-U <0.001
ANGLE2C 16.13 ± 2.88 14.21 ± 2.73 Student's t-test <0.001
  1. Statistically significant differences were found for all measurements in all 3-dimensional planes between genders, with female patients having significantly reduced surgical S1 and S2 corridors than male counterparts. See text for abbreviations and explanations.
  2. Abbreviations: S1FAC and S2FAC = S1 and S2 foramen-anterior cortex
  3. TS1BHT and T2SBHT = tallest coronal S1 and S2 body height/the sagittal S1 and S2 mean body height
  4. SS1BHT and SS2BHT = smallest S1 and S2 body height
  5. S1SAG.mean and S2SAG.mean = S1 and S2 sagittal mean height
  6. Angle 1A/2A and 1C/2C = axial S1 and S2 angle and coronal S1/S2 angle