Table 4.
Comparison of the pathological classifications of RCC patients in five periods
| ccRCC | pRCC | chRCC | Others | χ2 | P | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| N | Ratio/% | N | Ratio/% | N | Ratio/% | N | Ratio/% | |||
| 2013–2014 (N = 1407) | 1232 | 87.6 | 49 | 3.5 | 76 | 5.4 | 50 | 3.5 | 16.691 | 0.162 |
| 2015–2016 (N = 1734) | 1506 | 86.9 | 59 | 3.4 | 85 | 5.0 | 84 | 4.7 | ||
| 2017–2018 (N = 1924) | 1679 | 87.3 | 77 | 4.0 | 110 | 5.7 | 58 | 3.0 | ||
| 2019–2020 (N = 1908) | 1694 | 88.8 | 65 | 3.4 | 82 | 4.3 | 67 | 3.5 | ||
| 2021–2022 (N = 2137) | 1868 | 87.4 | 84 | 3.9 | 115 | 5.4 | 70 | 3.3 | ||
*RCC, renal cell carcinoma; ccRCC, clear cell renal cell carcinoma; pRCC, papillary renal cell carcinoma; chRCC, chromophobe renal cell carcinoma