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. Author manuscript; available in PMC: 2013 Mar 1.
Published in final edited form as: Cancer. 2011 Aug 5;118(5):1412–1421. doi: 10.1002/cncr.26402

Table 4.

Mixed-effects model predicting compliance with ≥4 cystoscopy, ≥4 cytology and ≥6 instillations of BCG with the 1st instillation within 90 days of diagnosis.

Variables Odds Ratio 95% CI
Age-group
 66–69 (referent) 1.00
 70–74 1.34 (0.93–1.94)
 75–79 0.92 (0.63–1.34)
 ≥80 0.44 (0.30–0.66)

Gender
 Male (referent) 1.00
 Female 1.24 (0.91–1.68)

Race
 White (referent) 1.00
 Black 0.57 (0.23–1.45)
 Hispanic 0.73 (0.33–1.61)
 Other 0.34 (0.14–0.85)

Marital
 Married (referent) 1.00
 Other 0.82 (0.62–1.08)

Charlson Score
 0 (referent) 1.00
 1 1.16 (0.87–1.55)
 2 1.04 (0.63–1.70)
 ≥3 0.64 (0.29–1.41)

% Of Subjects in ZIP code ≥ 25 years of age with ≥ 4 years of college education
 <15% (referent) 1.00
 15–25% 0.95 (0.63–1.43)
 25%–35% 0.97 (0.60–1.56)
 >35% 1.08 (0.66–1.79)

Median ZIP code household income
 <$35,000 (referent) 1.00
 $35,000–$45,000 0.82 (0.52–1.30)
 $45,000–$55,000 1.03 (0.64–1.66)
 >$55,000 1.15 (0.68–1.95)

Region
 West (referent) 1.00
 Midwest 1.28 (0.81–2.02)
 South 0.87 (0.52–1.47)
 Northeast 1.13 (0.75–1.71)

Year
 1992–1997 (referent) 1.00
 1998–2002 1.55 (1.17–2.05)

Surgeon Volume
 Low (<4) (referent) 1.00
 Medium (4–11) 0.93 (0.64–1.36)
 High (≥12) 0.78 (0.49–1.24)

Hospital Volume
 Low (≤10) (referent) 1.00
 Medium (11–25) 0.94 (0.65–1.35)
 High (>25) 1.06 (0.70–1.61)

Institution Type
 Non-Academic Non-Cancer Center (referent) 1.00
 Academic Non-Cancer Center 1.39 (0.95–2.03)
 Academic Cancer Center 2.04 (0.87–4.79)
 Unknown 0.78 (0.43–1.44)

Grade
 Poorly Differentiated (referent) 1.00
 Undifferentiated 1.74 (1.30–2.32)

Stage
 Ta (referent) 1.00
 Tis 2.12 (1.41–3.20)
 T1 1.56 (1.19–2.04)