Table 1.
Characteristic | Younger (n = 10,122) |
Older (n = 1558) |
P |
---|---|---|---|
Age y | 62 (55-67) | 77 (75-79) | N/A |
Sex (female) | 1107 (11) | 221 (14) | <.001 |
Race | .07 | ||
White | 9785 (98) | 1512 (98) | |
Black | 144 (1) | 12 (1) | |
Other | 109 (1) | 21 (1) | |
Year of diagnosis | 2010 (2008-2013) | 2010 (2008-2013) | .28 |
Charlson-Deyo score | <.001 | ||
0 | 7476 (74) | 1066 (68) | |
1 | 2125 (21) | 388 (25) | |
≥2 | 521 (5) | 104 (7) | |
Insurance status | <.001 | ||
Private | 5583 (56) | 144 (9) | |
Government | 4123 (42) | 1384 (90) | |
None | 203 (2) | 8 (1) | |
Facility location | .61 | ||
Metropolitan | 7721 (79) | 1188 (80) | |
Urban | 1795 (18) | 260 (18) | |
Rural | 232 (2) | 39 (2) | |
Distance to treatment center, miles | 19 (8-49) | 17 (7-48) | .04 |
Facility type | .006 | ||
Academic/research | 5409 (54) | 788 (51) | |
Annualized center surgical volume, cases/y | 7 (2-17) | 6 (2-14) | .11 |
Clinical stage | <.001 | ||
II | 5091 (50) | 926 (59) | |
III | 5031 (50) | 632 (41) | |
Distal primary tumor | 8743 (86) | 1339 (86) | .67 |
Tumor size, mm | 40 (25-55) | 40 (25-53) | .39 |
Minimally invasive approach | 1559 (15) | 265 (17) | .11 |
Neoadjuvant therapies | |||
Neoadjuvant chemotherapy | 8915 (89) | 1063 (69) | <.001 |
Neoadjuvant radiation | 8587 (85) | 998 (64) | <.001 |
Length of stay, d | 9 (7-14) | 10 (8-17) | <.001 |
Unplanned 30-d readmission | 531 (5) | 98 (6) | .10 |
Positive margins | 576 (6) | 125 (8) | <.001 |
30-d mortality | 265 (3) | 113 (7) | <.001 |
90-d mortality | 643 (6) | 228 (15) | <.001 |
All values are n (%) or median (interquartile range) unless otherwise stated.
N/A, not applicable.