Clinical features
tumor, GS
TUMOR
A total of 87,831 PC patients information between 2010 and 2018 was obtained from the SEER database, all patients received non-surgical treatment and were over 65 years of age. Patients were randomized into the training set (N = 61,595) and the validation set (N = 26,236). The mean age of all patients was 72.4 ± 5.69 years, with 77.6% white and 63.3% married. The tumor grade was mainly by grade II (39.8%) and grade III (41.3%). Most patients were T1 and T2, accounting for 64.2% and 30.5%, respectively. All patients were mainly N0 (96.6%) and M0 (94.5%). 98.8% of patients did not receive chemotherapy. RT included beam radiation (42.8%), radioactive implants or isotopes (7.23%), combined with radiation (5.43%), and no radiation (44.5%). The GS were divided into GS ≤ 6 (33.5%), 7 (39.8%), and GS ≥ 8 (26.7%), respectively. Patient PSA was < 10 ng/ml (63.3%), PSA 10–20 ng/ml (20.8%), and PSA > 20 ng/ml (15.9%).There was no significant statistical bias in the clinical characteristics of both groups, and the results are shown in Table Clinicopathological characteristics of elderly non-surgical treated PC patients.