Table 1 Clinicopathologic features of patients subjected to different chemotherapy regimens
| Â | No-chemo | 5FU/Capecitabine | FOLFOX/CapeOX |
|---|---|---|---|
Gender | |||
 Male | 3124 | 3591 | 799 |
 Female | 5645 | 4467 | 865 |
Age at diagnosis, years | |||
 66–70 | 554 | 1826 | 584 |
 71–75 | 1002 | 2422 | 514 |
 76–80 | 1784 | 2180 | 419 |
  > 80 | 5429 | 1630 | 147 |
Race | |||
 White | 7369 | 6909 | 1407 |
 Black | 841 | 592 | 132 |
 Asian | 244 | 260 | 52 |
 Other | 315 | 297 | 73 |
Marital status | |||
 Single+Separated | 823 | 551 | 125 |
 Married | 3105 | 4620 | 1044 |
 Divorced+Widowed | 4535 | 2654 | 443 |
 Other | 306 | 233 | 52 |
Residence location | |||
 Big Metro | 4802 | 4219 | 878 |
 Metro or Urban | 2963 | 2853 | 588 |
 Less Urban or Rural | 1002 | 986 | 198 |
Median household income | |||
 1st quartile | 2203 | 1803 | 371 |
 2nd quartile | 2102 | 1976 | 375 |
 3rd quartile | 2062 | 1949 | 393 |
 4th quartile | 2035 | 2029 | 443 |
 Unknown | 367 | 301 | 82 |
Level of education | |||
 1st quartile | 2064 | 2003 | 401 |
 2nd quartile | 2029 | 2015 | 373 |
 3rd quartile | 2136 | 1920 | 400 |
 4th quartile | 2173 | 1819 | 408 |
 Unknown | 367 | 301 | 82 |
Year of diagnosis | |||
 1992–1996 | 1837 | 1902 | 0 |
 1997–2000 | 1678 | 1887 | 0 |
 2001–2004 | 2739 | 3169 | 240 |
 2005–2008 | 2515 | 1100 | 1424 |
Primary tumor site | |||
 right-sided colon | 5867 | 5111 | 1068 |
 left-sided colon | 2730 | 2809 | 572 |
 unknown | 172 | 138 | 24 |
Histologic grade | |||
 Well | 432 | 422 | 99 |
 Moderate | 5360 | 5169 | 1046 |
 Poor+Undifferentiated | 2756 | 2251 | 486 |
 Unknown | 221 | 216 | 33 |
Histologic type | |||
 Adenocarcinoma | 7402 | 6811 | 1425 |
 Mucinous carcinoma | 1216 | 1140 | 212 |
 Signet-ring cell carcinoma | 151 | 107 | 27 |
pT category | |||
 pT1 | 173 | 302 | 69 |
 pT2 | 571 | 721 | 150 |
 pT3 | 6185 | 5805 | 1223 |
 pT4a | 1040 | 861 | 150 |
 pT4b | 800 | 369 | 72 |
pN category | |||
 pN1a | 3315 | 2898 | 500 |
 pN1b | 2889 | 2750 | 554 |
 pN2a | 1550 | 1518 | 357 |
 pN2b | 1015 | 892 | 253 |
pTNM stage | |||
 pTNM IIIa | 673 | 920 | 190 |
 pTNM IIIb | 6239 | 5814 | 1132 |
 pTNM IIIc | 1857 | 1324 | 342 |
Preoperative intestinal obstruction | |||
 No | 6406 | 6648 | 1367 |
 Yes | 2363 | 1410 | 297 |
Preoperative intestinal perforation | |||
 No | 8576 | 7998 | 1648 |
 Yes | 193 | 60 | 16 |
HCC risk score | |||
 1st quartile | 2557 | 1811 | 289 |
 2nd quartile | 1685 | 2427 | 539 |
 3rd quartile | 1972 | 2195 | 492 |
 4th quartile | 2555 | 1625 | 344 |
Number of examined lymph node | |||
  ≥ 12 | 4674 | 4274 | 1213 |
  < 12 | 4095 | 3784 | 451 |
Postoperative radiotherapy | |||
 No | 8692 | 7765 | 1639 |
 Yes | 77 | 293 | 25 |
Timing to AC | |||
  ≤ 4 weeks | 0 | 660 | 86 |
 5–8 weeks | 0 | 5118 | 1047 |
 9–12 weeks | 0 | 1502 | 381 |
 13–16 weeks | 0 | 369 | 97 |
  ≥ 17 weeks | 0 | 409 | 53 |
 No-chemo | 8769 | 0 | 0 |