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. Author manuscript; available in PMC: 2019 Mar 1.
Published in final edited form as: Am J Sports Med. 2018 Mar;46(4):815–825. doi: 10.1177/0363546517749850

Table 1.

Baseline and Intermediate Patient and Surgical Characteristics of the Study Cohort

Patient Demographic Factors
Age 24 (17, 35)
Gender
 • Male 902 (57%)
 • Female 690 (43%)
Ethnicity/Race
 • White 1,333 (84%)
 • Black 135 (8%)
 • Other 114 (7%)
 • Missing 10 (1%)
Baseline BMI 25 (22.4, 28.1)
 • Missing 35 (2%)
Baseline Smoking Status
 • Never 1,248 (78%)
 • Quit 158 (10%)
 • Current 170 (11%)
 • Missing 16 (1%)
Education level (years) 14 (11, 16)
 • Missing 11 (1%)
Main Sport
 • None 123 (8%)
 • Baseball / Softball 141 (9%)
 • Basketball 358 (23%)
 • Football 174 (11%)
 • Soccer 212 (13%)
 • Other 577 (36%)
 • Missing 7 (0%)
Competition Level
 • None 205 (13%)
 • Recreational 527 (33%)
 • Amateur 222 (14%)
 • High School 440 (28%)
 • College 159 (10%)
 • Semi-Pro / Professional 30 (2%)
 • Missing 9 (0%)
Surgical Characteristics
Surgeon Volume
 • #1 75 (5%)
 • #2 14 (1%)
 • #3 459 (29%)
 • #4 86 (5%)
 • #5 27 (2%)
 • #6 95 (6%)
 • #7 301 (19%)
 • #8 7 (0%)
 • #9 72 (5%)
 • #10 304 (19%)
 • #11 147 (9%)
 • #12 5 (0%)
Reconstruction type
 • Primary 1,439 (90%)
 • Revision 153 (10%)
Graft type
 • Autograft (BTB) 674 (42%)
 • Autograft (Soft Tissue) 496 (31%)
 • Allograft (BTB) 122 (8%)
 • Allograft (Soft Tissue) 300 (19%)
Previous ACL reconstruction on contralateral knee
 • Yes 138 (9%)
 • No 1,454 (91%)
Previous medial meniscal surgery
 • Yes 151 (9%)
 • No 1,441 (91%)
Previous lateral meniscus surgery
 • Yes 67 (4%)
 • No 1,525 (96%)
MCL Pathology
 • Normal/Grade 1 1,497 (94%)
 • Grades 2/3 95 (6%)
LCL Pathology
 • Normal/Grade 1 1,554 (98%)
 • Grades 2/3 38 (2%)
Medial Meniscal pathology
 • No Tear 999 (63%)
 • No Treatment for Tear 87 (5%)
 • Repair 199 (12%)
 • Excision - 1/3 72 (5%)
 • Excision - 2/3 193 (12%)
 • Excision – all 32 (2%)
 • Other 10 (1%)
Lateral Meniscal pathology
 • No Tear 880 (55%)
 • No Treatment for Tear 167 (10%)
 • Repair 99 (6%)
 • Excision - 1/3 260 (16%)
 • Excision - 2/3 155 (10%)
 • Excision – all 24 (2%)
 • Other 7 (0%)
AC pathology (medial compartment)
 • Normal/Grade 1 1,207 (76%)
 • Grade 2 229 (14%)
 • Grades 3–4 156 (10%)
AC pathology (lateral compartment)
 • Normal/Grade 1 1,252 (79%)
 • Grade 2 231 (15%)
 • Grades 3–4 109 (7%)
AC pathology (patellofemoral)
 • Normal/Grade 1 1,241 (78%)
 • Grade 2 202 (13%)
 • Grades 3–4 149 (9%)
AC pathology – linear cracks/fracture lines (medial compartment)
 • Yes 119 (7%)
 • No 1,473 (93%)
AC pathology – linear cracks/fracture lines (lateral compartment)
 • Yes 176 (11%)
 • No 1,416 (89%)
AC pathology – linear cracks/fracture lines (patellofemoral compartment)
 • Yes 31 (2%)
 • No 1,561 (98%)
Surgical exposure
 • 1 incision 1,103 (69%)
 • 2 incision 488 (31%)
 • Missing 1 (0%)
Notchplasty
 • Yes 1,545 (97%)
 • No 47 (3%)
High-grade Laxity
 • Yes 587 (37%)
 • No 1,005 (63%)
Intermediate Variables
2-year BMI 25.1 (22.6, 28.1)
 • Missing 237 (15%)
6-year BMI 25.8 (23.0, 28.7)
 • Missing 224 (14%)
2-year Smoking Status
 • Current 127 (8%)
 • Quit 201 (13%)
 • Never 1,013 (64%)
 • Missing 251 (16%)
6-year Smoking Status
 • Current 156 (10%)
 • Quit 238 (15%)
 • Never 965 (61%)
 • Missing 233 (15%)
Subsequent surgery (ipsilateral knee)
 • None 1,223 (77%)
 • Scope 221 (14%)
 • Revision ACL reconstruction 132 (8%)
 • Total knee arthroplasty 16 (1%)
Subsequent surgery (contralateral knee)
 • None 1,310 (82%)
 • Scope 78 (5%)
 • ACL reconstruction 140 (9%)
 • Total knee arthroplasty 3 (0%)
 • Missing 61 (4%)

Key: Continuous variables are listed as median (25%, 75% quartiles). Categorical variables are listed as frequency counts, n, (percentage). BMI = body mass index; BTB = bone-patellar tendon-bone; AC = articular cartilage.