Factors Associated with Survival of Veterans with Gastrointestinal Neuroendocrine Tumors

Table 2

Descriptives of demographic, clinical factors of survival and Cox regression model results.

	Unadjusted		Adjusted model 1 (𝑛=1721)		Adjusted model 2 (𝑛=1721)
Characteristic	Hazards ratio	95% CI	Hazards ratio	95% CI	Hazards ratio	95% CI
Age (years)	1.05	1.05-1.06	1.05	1.04–1.06	1.05	1.04-1.05
Race
White	1.00 (ref)	—	1.00 (ref)	—	1.00 (ref)	—
Non-white	0.79	0.67–0.94	1.02	0.86–1.22	1.02	0.85–1.22
Marital status
Married	1.00 (ref)	—	1.00 (ref)	—	1.00 (ref)	—
Not married	1.17	1.00–1.37	1.41	1.20–1.65	1.35	1.15–1.58
GI NET location
Rectum	1.00 (ref)	—	1.00 (ref)	—	1.00 (ref)	—
Stomach	2.48	1.86–3.29	2.26	1.68–3.05	2.38	1.77–3.20
Duodenum	2.26	1.70–3.01	1.70	1.26–2.28	1.79	1.33–2.41
Small intestine	3.16	2.56–3.89	1.85	1.42–2.42	2.45	1.95–3.06
Colon	2.08	1.64–2.63	1.83	1.41–2.39	2.09	1.63–2.68
Year of diagnosis
1995–1999	1.00 (ref)	—	1.00 (ref)	—	1.00 (ref)	—
2000–2004	0.64	0.54–0.77	0.70	0.59–0.85	0.70	0.58–0.85
2005–2009	0.36	0.28–0.45	0.43	0.34–0.54	0.41	0.32–0.52
Stage
In situ/localized	1.00 (ref)	—	1.00 (ref)	—
Regional	1.71	1.40–2.10	1.15	0.90–1.47
Distant	2.95	2.41–3.61	2.38	1.87–3.05
Missing	1.72	1.34–2.21	1.67	1.29–2.17
Tumor size (mm)	1.01	1.00-1.01	—	—