Table 1.
Basic characteristics of study subjects according to cancer site (n = 10,528).
| Stomach (n = 5372) | Colorectal (n = 3128) | Breast (n = 1308) | Cervix (n = 705) | |
|---|---|---|---|---|
| Sex | ||||
| Male | 3629 (67.6) | 1932 (61.8) | – | – |
| Female | 1743 (32.4) | 1196 (38.2) | 1323 (100) | 705 (100) |
| Quality index | ||||
| Histologic verificationa | 5099 (94.9) | 2925 (93.5) | 1298 (98.1) | 699 (99.1) |
| Age at diagnosis, years | ||||
| <50 | 661 (12.3) | 33 (1.1) | 648 (49.0) | 330 (46.8) |
| 50-69 | 2805 (52.2) | 1876 (60.0) | 561 (42.4) | 266 (37.7) |
| ≥70 | 1906 (35.5) | 1219 (39.0) | 114 (8.6) | 109 (15.5) |
| Calendar years at diagnosis | ||||
| 2005 | 1910 (35.6) | 1028 (32.9) | 423 (32.0) | 232 (32.9) |
| 2006 | 1794 (33.4) | 1019 (32.6) | 439 (33.2) | 264 (37.4) |
| 2007 | 1668 (31.0) | 1081 (34.6) | 461 (34.8) | 209 (29.6) |
| Rurality of residential areab | ||||
| Metropolitan area | 1755 (32.7) | 1211 (38.7) | 624 (47.2) | 287 (40.7) |
| Urban | 1306 (24.3) | 708 (22.6) | 378 (28.6) | 193 (27.4) |
| Rural | 624 (11.6) | 337 (10.8) | 87 (6.6) | 71 (10.1) |
| Remote rural | 1687 (31.4) | 872 (27.9) | 234 (17.7) | 154 (21.8) |
| SEER summary stage | ||||
| Early (In situ/Local) | 2418 (45.0) | 822 (26.3) | 655 (49.5) | 363 (51.5) |
| Late (Regional/Distant) | 2954 (55.0) | 2306 (73.7) | 668 (50.5) | 342 (48.5) |
| Amount of monthly premium | ||||
| Highest | 1277 (23.8) | 814 (26.0) | 326 (24.6) | 92 (13.0) |
| Mid-high | 1378 (25.7) | 796 (25.4) | 352 (26.6) | 165 (23.4) |
| Mid-low | 1128 (21.0) | 605 (19.3) | 247 (18.7) | 138 (19.6) |
| Lowest | 1589 (29.6) | 913 (29.2) | 398 (30.1) | 310 (44.0) |
| Community deprivation | ||||
| Lowest | 1288 (24.0) | 837 (26.8) | 246 (18.6) | 213 (30.2) |
| Mid-low | 1431 (26.6) | 630 (20.1) | 449 (33.9) | 169 (24.0) |
| Mid-high | 1321 (24.6) | 878 (28.1) | 256 (19.4) | 143 (20.3) |
| Highest | 1332 (24.8) | 783 (25.0) | 372 (28.1) | 180 (25.5) |
SEER, Surveillance, Epidemiology, and End Results Program.
a
Histological verification defined as cancer confirmation using cytology or pathologic diagnosis.
b
Metropolis defined as city with a population of more than one million; urban defined as area with a population of more than 100,000 and less than one million; rural defined as area with a population of less than 100,000 and located near a metropolis; remote rural defined as area with populations of less than 100,000 and located distant from a metropolis.