Table 2.
Patient demographics with recurrence rates according to the age categories; ages under 14, ages ≥ 14 as well as < 20, and ≥ 20.
| Variables | Group I (conservative) | Group II (surgery) | Total | p-value | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| (N = 127,194) | (N = 43,652) | (N = 170,846) | ||||||||
| Age categories | < 14 | ≥ 14, < 20 | ≥ 20 | < 14 | ≥ 14, < 20 | ≥ 20 | < 14 | ≥ 14, < 20 | ≥ 20 | |
| (N = 8,893) | (N = 57,386) | (N = 60,915) | (N = 638) | (N = 25,753) | (N = 17,261) | (N = 9,531) | (N = 83,139) | (N = 78,176) | ||
| N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | ||
| Year of diagnosis | < 0.001 | |||||||||
| 2002–2005 | 1,744 (19.6) | 11,986 (20.9) | 19,209 (31.5) | 90 (14.1) | 3,904 (15.2) | 4,055 (23.5) | 1,834 (19.2) | 15,890 (19.1) | 23,264 (29.8) | |
| 2006–2010 | 2,488 (28.0) | 17,605 (30.7) | 18,116 (29.7) | 231 (36.2) | 7,925 (30.8) | 5,313 (30.8) | 2,719 (28.5) | 25,530 (30.7) | 23,429 (30.0) | |
| 2010–2015 | 2,551 (28.7) | 17,199 (30.0) | 13,607 (22.3) | 186 (29.2) | 8,332 (32.4) | 4,479 (25.9) | 2,737 (28.7) | 25,531 (30.7) | 18,086 (23.1) | |
| 2016–2020 | 2,110 (23.7) | 10,596 (18.5) | 9,983 (16.4) | 131 (20.5) | 5,592 (21.7) | 3,414 (19.8) | 2,241 (23.5) | 1,6188 (19.5) | 13,397 (17.1) | |
| Gender | < 0.001 | |||||||||
| Male | 6,241 (70.2) | 52,017 (90.6) | 48,513 (79.6) | 503 (78.8) | 23,874 (92.7) | 15,332 (88.8) | 6,744 (70.8) | 75,891 (91.3) | 63,845 (81.7) | |
| Female | 2,652 (29.8) | 5,369 (9.4) | 12,402 (20.4) | 135 (21.2) | 1,879 (7.3) | 1,929 (11.2) | 2,787 (29.2) | 7,248 (8.7) | 14,331 (18.3) | |
| < 0.001 | ||||||||||
| Mean age | 10.7 ± 4.1 | 17.6 ± 1.4 | 26.8 ± 3.9 | 13.3 ± 2.0 | 17.7 ± 1.4 | 26.2 ± 3.7 | 11.0 ± 4.0 | 17.7 ± 1.4 | 26.6 ± 3.9 | |
| < 0.001 | ||||||||||
| Recurrence | 728 (8.2) | 16,025 (27.9) | 7,138 (11.7) | 352 (55.2) | 8,287 (32.2) | 2,213 (12.8) | 1,038 (10.9) | 2,4312 (29.2) | 9351 (12.0) | |