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. 2016 Apr 1;17:141. doi: 10.1186/s12891-016-1001-3

Table 1.

Demographics of patients included in the analysis after re-matching

Newer generation CR vs previous generation CR MB-CR vs previous generation CR
(n = 35) (n = 66) (n = 68) (n = 121)
Age 63 (11) 67 (10) 62 (8) 65 (8)
Gender Male 14 (40 %) 28 (44 %) 27 (40 %) 48 (40 %)
Female 21 (60 %) 36 (56 %) 41 (60 %) 73 (60 %)
Year of surgery 2010 0 0 9 (13 %) 16 (13 %)
2011 3 (9 %) 5 (8 %) 33 (49 %) 58 (48 %)
2012 28 (80 %) 51 (80 %) 26 (38 % 47 (39 %)
2013 4 (11 %) 8 (12 %) 0 0
KL-grade 1-2 13 (37 %) 25 (39 %) 26 (38 %) 47 (39 %)
3-4 22 (63 %) 39 (61 %) 42 (62 %) 74 (61 %)
Preop. axis 1° (5°) 1° (6°) 1° (5°) 1° (5°)
Postop. axis 4° (3°) 5° (3°) 4° (3°) 5° (3°)

Numbers presented in brackets are standard deviations (SD) where data is normally distributed or percentages of all