TABLE 2—

Multivariable Models Predicting Stage II Versus Stage I and Stage III/IV Versus Stage I Among Cervical Cancer Patients: National Cancer Database, United States, 2000–2007

Variable	Stage II vs Stage I, RR (95% CI)	Stage III/IV vs Stage I, RR (95% CI)
Age, y
21–34 (Ref)	1.00	1.00
35–39	1.22 (1.15, 1.29)	1.25 (1.18, 1.32)
40–44	1.44 (1.36, 1.52)	1.50 (1.43, 1.58)
45–49	1.72 (1.63, 1.82)	1.83 (1.74, 1.92)
50–54	1.92 (1.82, 2.03)	2.20 (2.09, 2.31)
55–59	1.98 (1.87, 2.10)	2.32 (2.21, 2.43)
60–64	1.98 (1.86, 2.11)	2.31 (2.20, 2.43)
65–69	1.98 (1.85, 2.13)	2.24 (2.11, 2.38)
70–85	2.19 (2.05, 2.35)	2.49 (2.35, 2.63)
Insurance status
Private (Ref)	1.00	1.00
Uninsured	1.43 (1.38, 1.49)	1.44 (1.40, 1.49)
Medicaid	1.32 (1.28, 1.37)	1.37 (1.34, 1.41)
Younger Medicarea	1.13 (1.05, 1.21)	1.12 (1.06, 1.19)
Older Medicareb	1.19 (1.12, 1.26)	1.20 (1.15, 1.26)
Missing	1.17 (1.10, 1.25)	1.27 (1.21, 1.33)
Race/ethnicity
Non-Hispanic White (Ref)	1.00	1.00
Hispanic	1.05 (1.01, 1.09)	0.86 (0.83, 0.89)
African American	1.05 (1.02, 1.09)	1.05 (1.02, 1.08)
Other/Asian	1.06 (1.01, 1.12)	0.88 (0.84, 0.92)
Missing	1.01 (0.97, 1.06)	0.96 (0.93, 1.00)
Histology
SCC (Ref)	1.00	1.00
Adenocarcinoma	0.71 (0.68, 0.73)	0.69 (0.67, 0.71)
Adenosquamous/GC	0.88 (0.83, 0.94)	0.90 (0.86, 0.96)
Other specified carcinoma	1.00 (0.90, 1.12)	1.29 (1.24, 1.35)
Unspecified carcinoma	0.91 (0.84, 0.99)	1.23 (1.18, 1.28)
Diagnosis year
2000–2001 (Ref)	1.00	1.00
2002–2003	1.04 (1.01, 1.08)	1.07 (1.04, 1.09)
2004–2005	1.06 (1.03, 1.10)	1.10 (1.07, 1.13)
2006–2007	1.06 (1.02, 1.09)	1.13 (1.10, 1.16)

Note. CI = confidence interval; GC = glassy cell carcinoma; RR = risk ratio; SCC = squamous cell carcinoma. Model also adjusted for area-level education, geographic region, and urban or rural residence.

^aAged 18–64 years.

^bAged ≥ 65 years.