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Retrospective Cohort Study
Copyright: ©Author(s) 2026.
World J Gastrointest Surg. Jun 27, 2026; 18(6): 120524
Published online Jun 27, 2026. doi: 10.4240/wjgs.120524
Table 1 Baseline characteristics before propensity score matching, mean ± SE or n (%)
Variable
Group P (n = 47)
Group M (n = 30)
P value
SMD
Age (years)64.62 ± 2.6469.70 ± 1.580.6200.62
Gender0.475
    Female25 (53.19)17 (56.66)
    Male22 (46.81)13 (43.33)
Stone size (cm)1.35 ± 0.881.48 ± 0.890.3480.35
Stone count1.85 ± 0.121.83 ± 0.170.7370.22


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