Table 4 Multivariate analysis of axillary evaluation and patients’ characteristics among patients who underwent breast conservation
From: DCIS and axillary nodal evaluation: compliance with national guidelines
Variable | Odds Ratio | Lower CL | Upper CL | p-Value | |
|---|---|---|---|---|---|
Age | Per year increase | 0.99 | 0.99 | 0.99 | <0.01 |
Facility Location (ref = South) | Midwest | 0.71 | 0.67 | 0.76 | <0.01 |
Northeast | 0.58 | 0.55 | 0.62 | ||
West | 0.72 | 0.67 | 0.77 | ||
Facility Type (ref = Comprehensive Community Cancer Program) | Community Cancer Program | 1.00 | 0.93 | 1.08 | <0.01 |
Academic/Research Program | 0.73 | 0.69 | 0.77 | ||
Primary Site (ref = Axillary tail) | Nipple areolar | 0.39 | 0.22 | 0.69 | <0.01 |
Central | 0.54 | 0.33 | 0.89 | ||
Upper inner | 0.60 | 0.37 | 0.98 | ||
Lower inner | 0.58 | 0.35 | 0.94 | ||
Upper outer | 0.69 | 0.43 | 1.13 | ||
Lower outer | 0.60 | 0.37 | 0.98 | ||
Axillary tail | 0.61 | 0.373 | 0.98 | ||
Overlapping lesion | 0.56 | 0.34 | 0.91 | ||
Race (ref = White) | Black | 0.85 | 0.79 | 0.92 | <0.01 |
Other | 0.81 | 0.73 | 0.90 | ||
Tumor Size (ref= > 5 cm) | <1 cm | 0.50 | 0.44 | 0.57 | <0.01 |
>1 cm, ≤2 cm | 0.69 | 0.71 | 0.90 | ||
>2 cm, ≤3 cm | 0.89 | 0.77 | 1.03 | ||
>3 cm, ≤4 cm | 0.96 | 0.82 | 1.13 | ||
>4 cm, ≤5 cm | 0.97 | 0.81 | 1.17 | ||
Year of Diagnosis (ref = 2011) | 1998 | 0.30 | 0.25 | 0.36 | <0.01 |
1999 | 0.29 | 0.24 | 0.35 | ||
2000 | 0.32 | 0.27 | 0.38 | ||
2001 | 0.35 | 0.30 | 0.41 | ||
2002 | 0.37 | 0.32 | 0.43 | ||
2003 | 0.49 | 0.43 | 0.55 | ||
2004 | 0.55 | 0.49 | 0.62 | ||
2005 | 0.56 | 0.50 | 0.62 | ||
2006 | 0.62 | 0.56 | 0.69 | ||
2007 | 0.66 | 0.60 | 0.73 | ||
2008 | 0.77 | 0.71 | 0.83 | ||
2009 | 0.79 | 0.73 | 0.85 | ||
2010 | 1.02 | 0.94 | 1.10 |