Table 3.

Multivariate analysis assessing the effect of race on colon cancer survival among 2,537 DoD beneficiaries with colon adenocarcinoma, stratified by age–sex and age–tumor stage

< 50 years (n = 408)≥ 50 years (n = 2,129)
Number of patientsNumber of patients
AliveDeadHRa,b (95% CI)AliveDeadHRa,b (95% CI)
  Non-Hispanic White123331.00 (Reference)6634251.00 (Reference)
  Non-Hispanic Black45241.72 (0.82–3.57)151900.85 (0.67–1.08)
  Non-Hispanic White90401.00 (Reference)4392151.00 (Reference)
  Non-Hispanic Black29242.87 (1.35–6.11)100460.79 (0.56–1.12)
Tumor stage
  Non-Hispanic White7831.00 (Reference)5781391.00 (Reference)
  Non-Hispanic Black342c122160.84 (0.48–1.46)
  Non-Hispanic White114281.00 (Reference)4662481.00 (Reference)
  Non-Hispanic Black37141.85 (0.63–5.47)108510.78 (0.57–1.08)
  Non-Hispanic White21421.00 (Reference)492401.00 (Reference)
  Non-Hispanic Black3322.45 (1.15–5.22)19680.79 (0.59–1.07)
  • aHR and 95% CI.

  • bModels were adjusted for year at diagnosis, age at diagnosis, race, sex, marital status at diagnosis, active duty status at diagnosis, service branch of active duty member/sponsor, rank of active duty member/sponsor, tumor stage, tumor grade, colon cancer site, comorbidities, recurrence, surgery, chemotherapy, and radiation therapy. Stratified variables were not included in stratified analysis.

  • cThe model had too few deaths to converge, therefore data was unavailable.