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Retrospective Cohort Study
Copyright: ©Author(s) 2026.
World J Clin Cases. Sep 6, 2026; 14(25): 125054
Published online Sep 6, 2026. doi: 10.12998/wjcc.125054
Table 3 Number of opioid prescriptions between patients of different body mass index levels within 2 years of total knee arthroplasty after propensity score matching, mean ± SD
Direct comparison
No. opioid prescriptions
Median
P value
BMI ≥ 30 kg/m² (n = 2779)4.18 ± 4.530.207
BMI < 30 kg/m² (n = 2779)3.96 ± 4.13
BMI ≥ 40 kg/m² (n = 734)4.76 ± 7.030.614
BMI 35-39.9 kg/m² (n = 734)4.52 ± 5.13
BMI ≥ 40 kg/m² (n = 792)4.75 ± 6.930.366
BMI 30-34.9 kg/m² (n = 792)4.35 ± 4.43
BMI ≥ 40 kg/m² (n = 807)4.74 ± 6.830.596
BMI < 30 kg/m² (n = 807)4.50 ± 5.13
BMI 35-39.9 kg/m² (n = 1126)4.62 ± 5.030.436
BMI 30-34.9 kg/m² (n = 1126)4.39 ± 4.73
BMI ≥ 40 kg/m² (n = 750)4.73 ± 6.930.478
BMI < 40 kg/m² (n = 750)4.39 ± 5.03


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