Table 6: Factors associated with noncompliance in chest and abdominal imaging on multivariate logistic regression.

Variable	Probability of undertesting of chest, OR (95% CI)		Probability of overtesting of abdomen, OR (95% CI)
	Univariate	Multivariate	Univariate	Multivariate
Male v. female	0.95 (0.76-1.17)	0.90 (0.70-1.17)	0.90 (0.74-1.11)	0.97 (0.76-1.25)
Age at procedure, yr (> 75 v. < 75)	1.39 (1.00-1.93)	1.43 (0.96-2.12)	0.80 (0.58-1.02)	1.02 (0.68-1.51)
High grade (yes v. no)	0.84 (0.68-1.03)	0.67 (0.51-0.87)	0.67 (0.55-0.82)	0.97 (0.75-1.24)
Positive surgical margin (yes v. no)	1.16 (0.78-1.75)	0.84 (0.51-1.38)	0.89 (0.60-1.32)	1.61 (0.98-2.64)
Radical nephrectomy (yes v. no)	1.06 (0.86-1.30)	0.61 (0.45-0.82)	0.62 (0.51-0.76)	1.06 (0.80-1.39)
Histologic type*
Other renal cell carcinoma	Reference	Reference	Reference	Reference
Low risk	1.24 (0.99-1.57)	3.14 (1.51-6.50)	0.94 (0.75-1.18)	0.69 (0.37-1.29)
Conventional clear cell	0.89 (0.71-1.12)	2.28 (1.12-4.48)	1.08 (0.87-1.34)	0.87 (0.48-1.56)
Cancer stage
pT1	Reference	Reference	Reference	Reference
pT2	3.00 (2.11-4.26)	5.36 (3.37-8.54)	0.90 (0.63-1.26)	0.71 (0.46-1.09)
pT3	1.42 (1.12-1.81)	2.64 (1.86-3.74)	0.27 (0.21-0.35)	0.23 (0.16-0.32)
Smoker (yes v. no)	0.81 (0.60-1.09)	0.88 (0.64-1.22)	1.03 (0.78-1.36)	0.96 (0.71-1.30)
Family history of kidney cancer (yes v. no)	1.39 (0.90-2.07)	1.48 (0.91-2.40)	0.92 (0.61-1.39)	1.04 (0.64-1.69)

Note: CI = confidence interval, OR = odds ratio.

*Primary histologic type from pathology report; low-risk category includes papillary and chromophobe renal cell carcinoma.