Table 4.

Factors associated with receipt of additional imaging

		Patients with Additional Imaging (n=436) Freq (%)	Patients without Additional Imaging (n=1,269) Freq (%)	Adjusted OR (95% CI)	P-value
Age
< 40		43 (9.8%)	63 (5.0%)	1.38 (0.88–2.16)	0.15
40–49		133 (30.5%)	295 (23.2%)	1.00	--
50–59		128 (29.4%)	319 (25.1%)	0.96 (0.71–1.29)	0.77
60–69		96 (22.0%)	375 (29.6%)	0.76 (0.54–1.08)	0.13
70 +		36 (8.3%)	217 (17.1%)	0.59 (0.35–0.99)	0.04
Race
White		352 (80.7%)	1,068 (84.2%)	1.00	--
Non-White		64 (14.7%)	155 (12.2%)	1.13 (0.80–1.60)	0.48
Missing		20 (4.6%)	46 (3.6%)	1.29 (0.74–2.25)	0.36
Language
English		416 (95.4%)	1,213 (95.6%)	1.00	--
Non-English		20 (4.6%)	56 (4.4%)	1.09 (0.61–1.95)	0.77
Insurance
Private		342 (78.4%)	817 (64.4%)	1.00	--
Medicaid		17 (3.9%)	41 (3.2%)	0.94 (0.51–1.73)	0.85
Medicare		72 (16.5%)	398 (31.4%)	0.65 (0.44–0.94)	0.02
Other		5 (1.2%)	13 (1.0%)	0.87 (0.30–2.52)	0.80
Stage*
0		33 (7.6%)	112 (8.8%)	1.00	--
I		214 (49.1%)	776 (61.2%)	0.96 (0.63–1.47)	0.86
II		142 (32.5%)	310 (24.4%)	1.47 (0.94–2.31)	0.09
III		44 (10.1%)	65 (5.1%)	1.99 (1.12–3.52)	0.02
IV		3 (0.7%)	6 (0.5%)	1.87 (0.43–8.17)	0.40
Surgery Type
Lumpectomy		252 (57.8%)	880 (69.3%)	1.00	--
Mastectomy		55 (12.6%)	151 (11.9%)	1.13 (0.79–1.61)	0.49
Mastectomy with Recon		129 (29.6%)	238 (18.8%)	1.37 (1.04–1.81)	0.02

^*Excluded patients for whom tumor stage was not readily available

OR odds ratio, CI 95% confidence interval