Table 3 Associations of nephrectomy type with oncologic outcomes in the four subsets cohort after further adjusting for the imbalanced features

Local ipsilateral recurrence

 G1 subset

0.305 (0.029–3.211)

0.323

 G2 subset

0.148 (0.046–0.474)

 < 0.05

 G3 subset

0.097 (0.021–0.455)

 < 0.05

 G4 subset

0.091 (0.011–0.736)

 < 0.05

Distant metastases

 G1 subset

0.800 (0.167–3.821)

0.780

 G2 subset

0.750 (0.259–2.174)

0.596

 G3 subset

0.339 (0.107–1.076)

0.066

 G4 subset

0.071 (0.016–0.325)

 < 0.05

All-cause mortality

 G1 subset

0.197 (0.018–2.149)

0.183

 G2 subset

0.619 (0.237–1.62)

0.329

 G3 subset

0.494 (0.021–11.788)

0.663

 G4 subset

0.957 (0.275–3.337)

0.945