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. 2023 Jul 26;35:21. doi: 10.1186/s43019-023-00195-1

Table 3.

Preoperative, postoperative, and pre/post-change (Δ) KOOS, JR scores stratified by BMI classification

BMI 18.5–25 kg/m2 25.01–30 kg/m2 30.01–40 kg/m2  > 40 kg/m2 P-value
KOOS, JR n = 206 n = 569 n = 925 n = 219
 Preoperative 51.7 ± 14.4 48.8 ± 14.0 45.0 ± 15.1 44.4 ± 15.0 < 0.001
 Postoperative 66.4 ± 15.2 64.7 ± 15.4 63.3 ± 15.0 64.2 ± 16.8 0.047
 Δ 14.6 ± 17.7 15.9 ± 17.1 18.3 ± 17.8 21.4 ± 19.6 < 0.001

Bold indicates statistical significance

BMI body mass index, KOOS, JR knee injury and osteoarthritis, joint replacement