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Table 3 Elixhauser and Charlson comorbidity adjustment scores for UKA and TKA

From: Unicompartmental knee arthroplasty: A PearlDiver study evaluating complications rates, opioid use and utilization in the Medicare population

Adjustment score Elixhauser Charlson
UKA TKA UKA TKA
# of patients with the Elixhauser/Charlson score
0 101 968 2,753 44,544
1 303 3,636 1,760 34,437
2 578 7,145 1,200 23,837
3 733 10,288 799 17,062
4 762 12,711 470 10,540
5 800 13,670 285 7,207
6 732 13,719 205 4,723
7 686 13,492 106 2,930
8 577 12,395 106 2,052
9 501 11,257 47 1,271
10 450 10,012 34 792
11 389 8,832 17 489
12 294 7,509 11 291
13 252 6,411 - 184
14 190 5,198 - 125
15 153 4,135 - 88
16 99 3,019 - 52
17 90 2,236 - 24
18 51 1,581 - -
19 23 1,084 - -
20 22 651 - -
21 11 385 - -
22 - 191 - -
23 - 106 - -
24 - 35 - -
25 - 11 - -
  Overall
Average 7.04 8.06 1.79 2.07
Median 6.00 7.00 1.00 1.00
St. dev 4.18 4.35 2.17 2.33
p  < 0.0001  < 0.0001