From: Better survival in right-sided versus left-sided stage I - III colon cancer patients
Logistic regression in raw data (N = 91,4166)a | Patient characteristics after stratified bipartite propensity score matching (N = 90,067)c | ||||||
---|---|---|---|---|---|---|---|
OR (95 % CI) | Pb | Total | Right-sided carcinoma | Left-sided carcinoma | Pb | ||
N = 90,067 | N = 51,331 | N = 38,736 | |||||
Tumor stage | Stage I | D) | 24,924 (27.7 %) | 13,622 (26.5 %) | 11,302 (29.2 %) | E) | |
(AJCC 6th ed.) | Stage II | 33,002 (36.6 %) | 19,790 (38.6 %) | 13,212 (34.1 %) | |||
Stage III | 32,141 (35.7 %) | 17,919 (34.9 %) | 14,222 (36.7 %) | ||||
T-stage | T1 | Reference | <0.001 | 11387.4 (12.6 %) | 6378 (12.4 %) | 5009.4 (12.9 %) | 0.908 |
T2 | 1.45 (1.36–1.55) | 17213.6 (19.1 %) | 9360 (18.2 %) | 7853.6 (20.3 %) | |||
T3 | 1.15 (1.08–1.22) | 50984.6 (56.6 %) | 29,704 (57.9 %) | 21280.6 (54.9 %) | |||
T4 | 1.08 (1.00–1.17) | 10481.4 (11.6 %) | 5889 (11.5 %) | 4592.4 (11.9 %) | |||
Number of positive | 0 | Reference | <0.001 | 57,926 (64.3 %) | 33,412 (65.1 %) | 24,514 (63.3 %) | 0.733 |
Regional lymph | 1 | 0.82 (0.78–0.87) | 10303.2 (11.4 %) | 5579 (10.9 %) | 4724.2 (12.2 %) | ||
Nodes | 2–3 | 0.82 (0.77–0.86) | 9909.2 (11.0 %) | 5631 (11.0 %) | 4278.2 (11.0 %) | ||
4–6 | 0.87 (0.81–0.93) | 6433.9 (7.1 %) | 3650 (7.1 %) | 2783.9 (7.2 %) | |||
7+ | 0.94 (0.86–1.01) | 5494.7 (6.1 %) | 3059 (6.0 %) | 2435.7 (6.3 %) | |||
Number of retrieved | <12 | Reference | <0.001 | 18327.7 (20.3 %) | 10,240 (19.9 %) | 8087.7 (20.9 %) | 0.931 |
Regional lymph | 12–16 | 1.72 (1.64–1.80) | 25,713 (28.5 %) | 14,813 (28.9 %) | 10,900 (28.1 %) | ||
Nodes | 17+ | 2.44 (2.33–2.55) | 46026.3 (51.1 %) | 26,278 (51.2 %) | 19748.3 (51.0 %) | ||
Grading | G1 | Reference | <0.001 | 8274.1 (9.2 %) | 4667 (9.1 %) | 3607.1 (9.3 %) | 0.954 |
G2 | 0.97 (0.91–1.02) | 60851.4 (67.6 %) | 34,630 (67.5 %) | 26221.4 (67.7 %) | |||
G3 | 1.74 (1.62–1.87) | 16543.4 (18.4 %) | 9599 (18.7 %) | 6944.4 (17.9 %) | |||
G4 | 1.92 (1.64–2.24) | 1738.2 (1.9 %) | 1035 (2.0 %) | 703.2 (1.8 %) | |||
Unknown | 0.92 (0.82–1.03) | 2659.8 (3.0 %) | 1400 (2.7 %) | 1259.8 (3.3 %) | |||
Histology | Adenocarcinoma | Reference | <0.001 | 62172.7 (69.0 %) | 35,607 (69.4 %) | 26565.7 (68.6 %) | 0.978 |
Adeno-Ca in adenomatous polyp | 0.95 (0.89–1.02) | 5139.1 (5.7 %) | 2883 (5.6 %) | 2256.1 (5.8 %) | |||
Adeno-Ca in villous adenoma | 2.02 (1.82–2.25) | 2901.7 (3.2 %) | 1664 (3.2 %) | 1237.7 (3.2 %) | |||
Adeno-Ca in tubulovillous adenoma | 1.73 (1.62–1.85) | 8333.5 (9.3 %) | 4806 (9.4 %) | 3527.5 (9.1 %) | |||
Mucinous carcinoma | 2.23 (2.10–2.37) | 11,520 (12.8 %) | 6371 (12.4 %) | 5149 (13.3 %) | |||
CEA | C0-stage | Reference | <0.001 | 31640.5 (35.1 %) | 18,476 (36.0 %) | 13164.5 (34.0 %) | 0.763 |
C1-stage | 0.88 (0.83–0.92) | 17236.6 (19.1 %) | 9804 (19.1 %) | 7432.6 (19.2 %) | |||
Unknown/Borderline | 1.00 (0.96–1.04) | 41189.8 (45.7 %) | 23,051 (44.9 %) | 18138.8 (46.8 %) | |||
Operation | Segmental resection | Reference | <0.001 | 13557.3 (15.1 %) | 7750 (15.1 %) | 5807.3 (15.0 %) | 0.447 |
Hemi/subtotal colectomy | 14.3 (13.8–14.8) | 75781.8 (84.1 %) | 43,171 (84.1 %) | 32610.8 (84.2 %) | |||
Other | 2.66 (2.32–3.05) | 727.9 (0.8 %) | 410 (0.8 %) | 317.9 (0.8 %) | |||
Year | 2004 to 2006 | Reference | 0.285 | 31,052 (34.5 %) | 17,527 (34.1 %) | 13,525 (34.9 %) | E) |
2007 to 2009 | 0.97 (0.93–1.01) | 30,869 (34.3 %) | 17,585 (34.3 %) | 13,284 (34.3 %) | |||
2010 to 2012 | 0.97 (0.93–1.01) | 28,146 (31.3 %) | 16,219 (31.6 %) | 11,927 (30.8 %) | |||
Age | Up to 49 years | Reference | <0.001 | 5545.6 (6.2 %) | 3174 (6.2 %) | 2371.6 (6.1 %) | 0.995 |
50 to 64 years | 1.56 (1.46–1.66) | 21581.8 (24.0 %) | 12,332 (24.0 %) | 9249.8 (23.9 %) | |||
65 to 79 years | 2.65 (2.49–2.83) | 37577.3 (41.7 %) | 21,253 (41.4 %) | 16324.3 (42.1 %) | |||
80+ years | 4.08 (3.80–4.39) | 25362.3 (28.2 %) | 14,572 (28.4 %) | 10790.3 (27.9 %) | |||
Gender | male | Reference | <0.001 | 40730.6 (45.2 %) | 22,954 (44.7 %) | 17776.6 (45.9 %) | 0.570 |
female | 1.30 (1.26–1.35) | 49336.4 (54.8 %) | 28,377 (55.3 %) | 20959.4 (54.1 %) | |||
Ethnicity | Caucasian | Reference | <0.001 | 72714.5 (80.7 %) | 41,771 (81.4 %) | 30943.5 (79.9 %) | 0.050 |
African-American | 1.09 (1.04–1.15) | 11763.1 (13.1 %) | 6213 (12.1 %) | 5550.1 (14.3 %) | |||
Other/Unknown | 0.66 (0.62–0.70) | 5589.4 (6.2 %) | 3347 (6.5 %) | 2242.4 (5.8 %) | |||
Marital status | Married | Reference | 0.877 | 47284.7 (52.5 %) | 27,005 (52.6 %) | 20279.7 (52.4 %) | 0.930 |
Single | 0.98 (0.93–1.03) | 10609.8 (11.8 %) | 6044 (11.8 %) | 4565.8 (11.8 %) | |||
Widowed | 1.00 (0.95–1.05) | 20331.9 (22.6 %) | 11,580 (22.6 %) | 8751.9 (22.6 %) | |||
Other/Unknown | 0.99 (0.94–1.05) | 11840.6 (13.1 %) | 6702 (13.1 %) | 5138.6 (13.3 %) |