Table 3.
Multivariable Analysis to predict use of invasive staging among subset of Stage IIIA patients Treated with Combined Chemotherapy and Radiation
| Variable | Odds Ratio | 95% CI | Adjusted Odds Ratio | 95% CI | |
|---|---|---|---|---|---|
| Age | |||||
| Age 67–69 | Ref | n/a | Ref | n/a | |
| Age 70–74 | 0.85 | 0.66–1.12 | 0.80 | 0.61–1.04 | |
| Age 75–79 | 0.63 | 0.47–0.83 | 0.58 | 0.43–0.77 | |
| Age 80–84 | 0.47 | 0.33–0.67 | 0.27 | 027–0.57 | |
| Over Age 85 | 0.41 | 0.21–0.80 | 0.36 | 0.18–0.71 | |
| Gender | |||||
| Male | Ref | n/a | n/a | n/a | |
| Female | 1.18 | 0.97–1.43 | Not significant | Not significant | |
| Race | |||||
| White | Ref | n/a | |||
| Black | 0.72 | 0.49–1.06 | Not significant | Not significant | |
| Other | 1.68 | 1.02–2.78 | Not significant | Not significant | |
| Comorbidities | |||||
| 0 | Ref | n/a | n/a | n/a | |
| 1–2 | 1.00 | 0.81–1.24 | Not significant | Not significant | |
| ≥3 | 0.80 | 0.60–1.06 | Not significant | Not significant | |
| Marital Status | |||||
| Married | Ref | n/a | n/a | n/a | |
| Unmarried | 0.98 | 0.80–1.20 | Not significant | Not significant | |
| Unknown | 1.13 | 0.65–1.95 | Not significant | Not significant | |
| Income | |||||
| 1st quintile | Ref | n/a | n/a | n/a | |
| 2nd quintile | 1.37 | 1.00–1.89 | 1.30 | 0.92–1.84 | |
| 3rd quintile | 1.32 | 0.96–1.83 | 1.06 | 0.74–1.52 | |
| 4th quintile | 1.45 | 1.05–2.00 | 1.11 | 076–1.61 | |
| 5th quintile | 1.58 | 1.14–2.18 | 1.28 | 0.86–1.88 | |
| Unknown | 1.14 | 0.67–1.94 | 0.86 | 0.49–1.52 | |
| Influenza Vaccination | |||||
| Negative Vaccination | Ref | n/a | n/a | n/a | |
| Positive Vaccination | 1.28 | 1.05–1.56 | 1.31 | 1.06–1.61 | |
| Year of Diagnosis | |||||
| 1998 | Ref | n/a | n/a | n/a | |
| 1999 | 1.03 | 0.58–1.84 | Not significant | Not significant | |
| 2000 | 1.04 | 0.64–1.70 | Not significant | Not significant | |
| 2001 | 0.62 | 0.37–1.05 | Not significant | Not significant | |
| 2002 | 0.67 | 0.40–1.10 | Not significant | Not significant | |
| 2003 | 0.75 | 0.46–1.22 | Not significant | Not significant | |
| 2004 | 1.07 | 0.67–1.70 | Not significant | Not significant | |
| 2005 | 0.97 | 0.61–1.55 | Not significant | Not significant | |
| SEER Registry | |||||
| San Francisco | Ref | n/a | |||
| Connecticut | 3.72 | 1.46–9.34 | 4.57 | 1.74–12.01 | |
| Detroit | 4.18 | 1.71–10.20 | 5.46 | 2.15–13.86 | |
| Hawaii | 1.19 | 0.31–4.65 | 0.64 | 0.15–2.68 | |
| Iowa | 3.71 | 1.49–9.24 | 4.33 | 1.65–11.38 | |
| New Mexico | 2.63 | 0.88–7.88 | 3.31 | 1.05–10.40 | |
| Seattle | 5.53 | 2.21–13.84 | 6.52 | 2.51–16.92 | |
| Utah | 2.87 | 0.80–10.26 | 3.07 | 0.83–11.44 | |
| Atlanta | 3.18 | 1.20–8.49 | 4.19 | 1.52–11.58 | |
| San Jose | 2.24 | 0.74–6.80 | 2.51 | 0.81–7.80 | |
| Los Angeles | 5.47 | 2.13–14.06 | 6.82 | 2.57–18.10 | |
| Rural Georgia | 1.02 | 0.11–9.84 | 1.71 | 0.17–16.94 | |
| Greater California | 2.26 | 0.93–5.51 | 2.71 | 1.07–6.86 | |
| Kentucky | 2.03 | 0.81–5.06 | 2.43 | 0.93–6.38 | |
| Louisiana | 2.14 | 0.84–5.42 | 2.78 | 1.04–7.43 | |
| New Jersey | 2.90 | 1.18–7.09 | 3.58 | 1.42–9.06 | |