Table 4.

CRC-specific multivariate survival analysis and analysis for confounding of CRC cases by ethnicity using Cox proportional hazards models (January 1994 to December 2003)

A. Colon cancer*
HR (95% CI)HR (95% CI)HR (95% CI)HR (95% CI)HR (95% CI)
Race
    Caucasian1.00 (Reference)1.00 (Reference)1.00 (Reference)1.00 (Reference)1.00 (Reference)
    African-American1.32 (1.26-1.38)1.19 (1.14-1.25)1.14 (1.09-1.19)1.15 (1.10-1.20)1.08 (1.03-1.13)
    Hispanic1.04 (0.99-1.08)0.98 (0.94-1.03)0.97 (0.93-1.01)0.97 (0.93-1.01)0.92 (0.88-0.96)
    Chinese0.90 (0.83-0.97)0.89 (0.82-0.97)0.89 (0.82-0.96)0.88 (0.81-0.96)0.88 (0.81-0.96)
    Non-Chinese Asian0.95 (0.90-1.01)0.88 (0.83-0.93)0.88 (0.83-0.93)0.89 (0.84-0.94)0.88 (0.83-0.93)
Stage
    I1.00 (Reference)1.00 (Reference)1.00 (Reference)1.00 (Reference)
    II2.81 (2.64-2.98)2.88 (2.71-3.06)3.00 (2.82-3.18)2.99 (2.81-3.17)
    III6.09 (5.74-6.45)6.30 (5.94-6.68)7.08 (6.67-7.53)7.05 (6.63-7.49)
    IV35.26 (33.30-37.33)30.89 (29.16-32.73)34.65 (32.63-36.81)34.53 (32.51-36.67)
Surgery
    None1.00 (Reference)1.00 (Reference)1.00 (Reference)
    Any0.34 (0.33-0.36)0.35 (0.34-0.37)0.35 (0.34-0.37)
Radiation
    None1.00 (Reference)1.00 (Reference)
    Any1.41 (1.32-1.50)1.40 (1.31-1.50)
Chemotherapy
    None1.00 (Reference)1.00 (Reference)
    Any0.80 (0.77-0.82)0.80 (0.78-0.83)
SES
    Lowest1.26 (1.20-1.32)
    Second lowest1.17 (1.12-1.22)
    Middle1.13 (1.08-1.17)
    High1.06 (1.02-1.10)
    Highest1.00 (Reference)
B. Rectal cancer
Race
    Caucasian1.00 (Reference)1.00 (Reference)1.00 (Reference)1.00 (Reference)1.00 (Reference)
    African-American1.37 (1.27-1.49)1.27 (1.17-1.38)1.19 (1.10-1.29)1.19 (1.09-1.29)1.11 (1.02-1.20)
    Hispanic1.16 (1.10-1.23)1.07 (1.01-1.13)1.05 (0.99-1.11)1.05 (0.99-1.11)0.99 (0.93-1.05)
    Chinese0.96 (0.85-1.08)0.98 (0.87-1.11)1.00 (0.88-1.13)0.98 (0.87-1.11)0.98 (0.87-1.11)
    Non-Chinese Asian0.96 (0.89-1.03)0.89 (0.82-0.96)0.87 (0.81-0.94)0.87 (0.80-0.94)0.86 (0.80-0.93)
Stage
    I1.00 (Reference)1.00 (Reference)1.00 (Reference)1.00 (Reference)
    II2.99 (2.79-3.20)2.85 (2.66-3.05)3.14 (2.93-3.38)3.11 (2.90-3.34)
    III4.15 (3.88-4.44)4.29 (4.01-4.59)4.99 (4.64-5.36)4.93 (4.59-5.30)
    IV24.12 (22.63-25.71)17.09 (15.97-18.28)19.41 (18.06-20.87)19.22 (17.87-20.66)
Surgery
    None1.00 (Reference)1.00 (Reference)1.00 (Reference)
    Any0.34 (0.32-0.36)0.33 (0.31-0.35)0.33 (0.32-0.35)
Radiation
    None1.00 (Reference)1.00 (Reference)
    Any0.97 (0.92-1.02)0.97 (0.92-1.02)
Chemotherapy
    None1.00 (Reference)1.00 (Reference)
    Any0.78 (0.74-0.82)0.79 (0.75-0.83)
SES
    Lowest1.33 (1.24-1.42)
    Second lowest1.20 (1.13-1.28)
    Middle1.17 (1.10-1.25)
    High1.11 (1.04-1.18)
    Highest1.00 (Reference)
  • * Each model includes adjustment for age at diagnosis, gender, histology, and site in colon.

  • Each model includes adjustment for age at diagnosis, gender, histology, and site in rectum.