Table 2 Baseline characteristics of patients with larynx cancer in the original/matched data sets (N = 24,812)
From: Impact of prior cancer history on the survival of patients with larynx cancer
Characteristics | Original data set | Matched data set | ||||
|---|---|---|---|---|---|---|
No prior cancer N = 22,376 (%) | With prior cancer N = 2436 (%) | P value | No prior cancer N = 2436 (%) | With prior cancer N = 2436 (%) | P value | |
Age (years), mean (SD) | 63.6 (11.6) | 71.3 (10.1) | <.001 | 68.4 (10.0) | 71.3 (10.1) | 0.025 |
Year of diagnose(%) | 0.001 | 0.643 | ||||
2004–2009 | 10,484 (46.9) | 1056 (43.3) | 1040 (42.7) | 1056 (43.3) | ||
2010–2015 | 11,892 (53.1) | 1380 (56.7) | 1396 (57.3) | 1380 (56.7) | ||
Race | 0.025 | 0.069 | ||||
White | 17,878 (79.9) | 1981 (81.3) | 2019 (82.9) | 1981 (81.3) | ||
Black | 3495 (15.6) | 374 (15.4) | 322 (13.2) | 374 (15.4) | ||
Others/Unknown | 1003 (4.5) | 81 (3.3) | 95 (3.9) | 81 (3.3) | ||
Gender | 0.032 | 0.964 | ||||
Male | 18,032 (80.6) | 2007 (82.4) | 2028 (83.3) | 2007 (82.4) | ||
Female | 4344 (19.4) | 429 (17.6) | 408 (16.7) | 429 (17.6) | ||
Marital status | <.001 | 0.158 | ||||
Single | 4511 (20.2) | 330 (13.5) | 366 (15.0) | 330 (13.5) | ||
Married | 11,093 (49.6) | 1309 (53.7) | 1260 (51.7) | 1309 (53.7) | ||
Others status a | 5591 (25.0) | 641 (26.3) | 675 (27.7) | 641 (26.3) | ||
Unknown | 1181 (5.3) | 156 (6.4) | 135 (5.5) | 156 (6.4) | ||
Grade | 0.546 | 0.170 | ||||
Grade I | 2992 (13.4) | 319 (13.1) | 323 (13.3) | 319 (13.1) | ||
Grade II | 10,175 (45.5) | 1071 (44.0) | 1082 (44.4) | 1071 (44.0) | ||
Grade III | 3919 (17.5) | 448 (18.4) | 387 (15.9) | 448 (18.4) | ||
Grade IV | 164 (0.7) | 17 (0.7) | 21 (0.9) | 17 (0.7) | ||
Unknown | 5126 (22.9) | 581 (23.9) | 623 (25.6) | 581 (23.9) | ||
AJCC stage | <.001 | 0.402 | ||||
I | 7257 (32.4) | 974 (40.0) | 971 (39.9) | 974 (40.0) | ||
II | 3411 (15.2) | 347 (14.2) | 392 (16.1) | 347 (14.2) | ||
III | 3616 (16.2) | 393 (16.1) | 365 (15.0) | 393 (16.1) | ||
IV | 6529 (29.2) | 537 (22.0) | 532 (21.8) | 537 (22.0) | ||
Unknown | 1563 (7.0) | 185 (7.6) | 176 (7.2) | 185 (7.6) | ||
Surgery | 0.012 | 0.460 | ||||
No/unknown | 14,355 (64.2) | 1500 (61.6) | 1525 (62.6) | 1500 (61.6) | ||
Yes | 8021 (35.8) | 936 (38.4) | 911 (37.4) | 936 (38.4) | ||
Chemotherapy | <.001 | 0.413 | ||||
No/unknown | 14,809 (66.2) | 1868 (76.7) | 804 (33.0) | 831 (34.1) | ||
Yes | 7567 (33.8) | 568 (23.3) | 1632 (67.0) | 1605 (65.9) | ||
Radiotherapy | <.001 | 0.683 | ||||
No/unknown | 5723 (25.6) | 831 (34.1) | 1880 (77.2) | 1868 (76.7) | ||
Yes | 16,653 (74.4) | 1605 (65.9) | 556 (22.8) | 568 (23.3) | ||