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. Author manuscript; available in PMC: 2020 Mar 1.
Published in final edited form as: Am J Sports Med. 2019 Feb 21;47(4):807–814. doi: 10.1177/0363546519825500

Table 4.

Summary statistics of baseline demographics and two-year outcomes by post-training coper classification

Mean ± SD (Range) or % (n)
Potential Coper Non-coper
n 185 86
Sex, female 49.2% (91) 43.0% (37)
Age at baseline, years 26.1 ± 9.9 (13 – 54) 27.5 ± 9.8 (15 – 55)
Body mass index at baseline, kg/m2 24.2 ± 3.5 (18.3 – 39.8) 25.6 ± 4.7 (18.6 – 40.3)
Level of sport prior to injury
                  Level I
                 Level II
69.1% (128)
30.8% (57)
69.8% (60)
30.2% (26)
Time from injury to enrollment, days 57 ± 30 (1 – 272) 64 ± 43 (8 – 270)
ACL status at two years
                    ACLR
                 Non-Op
64.9% (120)
35.1% (65)
82.6% (71)
17.4% (15)
IKDC at two years 91.9 ± 9.7 (50.0 – 100) 88.2 ± 12.9 (37.9 – 100)
≤1 episodes of giveway at two years 96.4% (133, missing 47) 81.4% (57, missing 16)
ACL graft rupture by two years 6.0% (11) 10.5% (9)

Abbreviations: SD, Standard deviation; ACL, Anterior cruciate ligament; IKDC, International Knee Documentation Subjective Knee Form