Table 3 Crude and adjusted analysis of the association between age and adjuvant chemotherapy in stage III colon cancer

  < 65

< 0.0005^b

1

 65–80

0.3 (0.1–0.6)

0.001

  > 80

0.04 (0.02–0.09)

< 0.0005

 Male

0.57^a

 Female

 Quartile 1

0.29^b

 Quartile 2

 Quartile 3

 Quartile 4

 No formal

< 0.0005^b

1

 Primary

1.2 (0.7–2.2)

0.46

 Secondary

1.6 (0.4–5.5)

0.46

 University

1.6 (0.5–5.7)

0.45

 Living alone

0.2^a

 Living with others

 No

< 0.0005^a

1

 Yes

1.9 (0.7–5.0)

0.21

 No

0.001^a

1

 Yes

1.0 (0.4–2.2)

0.99

 Never smoker

0.516^a

 Current smoker

 Ex-smoker

 No

0.42^a

 Yes

 0

< 0.0005^b

1

 1

0.8 (0.5–1.4)

0.43

  ≥ 2

0.6 (0.3–1.2)

0.17

 I-II

< 0.0005^b

1

 III

0.6 (0.3–1.1)

0.10

 IV

0.1 (0.03–0.3)

< 0.0005

 Rectosigmoid junction

0.19^a

1

 Distal colon

0.5 (0.2–1.4)

0.18

 Proximal colon

0.5 (0.2–1.6)

0.25

 Low grade

0.12^a

1

 High grade

1.2 (0.4–3.4)

0.70

 Adenocarcinoma

0.29^a

 Mucinous Adenocarcinoma

 Signet-ring cell carcinoma

 Other carcinomas

 No

0.30^a

 Yes

 General

0.07^a

1

 Coloproctologist

1.3 (0.6–3.1)

0.50

 R0

0.62^a

 R1/R2