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Table 1 Tile classification and interobserver reliability for pelvic fractures (n = 228)

From: Association of pelvic fracture patterns, pelvic binder use and arterial angio-embolization with transfusion requirements and mortality rates; a 7-year retrospective cohort study

Categories and sub-categories Spontaneous agreement
n (%)
158 (69)
Classified by consensus
n (%)
70 (31)
p
Main 1st order 2nd order
(k = 0.83) (k = 0.75) (k = 0.70)
A (n = 52)    46 (89) 6 (11) 0.001
  A1 (n = 2)   2 (100) 0 0.47
   A1.1 (n = 1) 1 (100) 0 1
   A1.2 (n = 1) 1 (100) 0 1
  A2 (n = 41)   36 (88) 5 (12) 0.002
   A2.1 (n = 18) 15 (83) 3 (17) 0.13
   A2.2 (n = 17) 15 (88) 2 (12) 0.06
   A2.3 (n = 6) 6 (100) 0 0.11
  A3 (n = 9)   8 (89) 1 (11) 0.28
   A3.1 (n = 1) 1 (100) 0 1
   A3.2 (n = 5) 4 (80) 1 (20) 0.51
   A3.3 (n = 3) 3 (100) 0 0.55
B (n = 71)    44 (62) 27 (38) 0.12
  B1 (n = 5)   2 (40) 3 (60) 0.33
   B1.1 (n = 3) 2 (67) 1 (33) 1
   B1.2 (n = 2) 0 2 (100) 0.09
  B2 (n = 56)   41 (73) 15 (27) 0.51
   B2.1 (n = 45) 33 (73) 12 (27) 0.59
   B2.2 (n = 11) 8 (73) 3 (27) 1
  B3 (n = 8)   1 (13) 7 (87) 0.001
   B3.1 (n = 1) 0 1 (100) 0.31
   B3.3 (n = 7) 1 (14) 6 (86) 0.004
  Bxa (n = 2)   0 2 (100) 0.09
C (n = 105)    68 (65) 37 (35) 0.2
  C1 (n = 65)   45 (69) 20 (31) 1
   C1.1 (n = 1) 1 (100) 0 1
   C1.2 (n = 22) 13 (59) 9 (41) 0.33
   C1.3 (n = 42) 31 (74) 11 (26) 0.58
  C2 (n = 14)   7 (50) 7 (50) 0.13
   C2.2 (n = 8) 4 (50) 4 (50) 0.25
   C2.3 (n = 6) 3 (50) 3 (50) 0.37
  C3 (n = 25)   16 (64) 9 (36) 0.65
   C3.1 (n = 5) 2 (40) 3 (60) 0.33
   C3.2 (n = 2) 2 (100) 0 0.57
   C3.3 (n = 18) 12 (67) 6 (33) 0.49
  Cxa (n = 1)   0 1 (100) 0.3
  1. Fisher’s exact test was used. Unless stated otherwise, data are displayed as numbers (%). k = Cohen’s Kappa
  2. afracture type not further specified