Table 3.

Results of logistic regression analysis for predicting receipt of chemotherapy among patients diagnosed with metastatic bladder cancer in California, 1988–2014.

	Crude		Adjusted+
	OR (95% CI)	P-Value	OR (95% CI)	P-Value
Age at Diagnosis
20–64 years	Ref	–	Ref	–
65–74 years	0.6 (0.5, 0.7)	<0.0001*	0.5 (0.4, 0.6)	<0.0001*
75+ years	0.2 (0.2, 0.3)	<0.0001*	0.2 (0.2, 0.3)	<0.0001*
Sex
Male	Ref	–	Ref	–
Female	0.7 (0.6, 0.8)	<0.0001*	0.9 (0.8, 1.1)	0.3836
Race/Ethnicity
Non-Hispanic White	Ref	–	Ref	–
Non-Hispanic Black	0.7 (0.6, 1.0)	0.0394*	0.8 (0.6, 1.2)	0.3016
Hispanic	1.1 (0.9, 1.3)	0.3651	1.2 (0.9, 1.5)	0.2172
Asian/Pacific Islander	1.0 (0.8, 1.4)	0.8462	1.0 (0.7, 1.4)	0.9244
Neighborhood Socioeconomic Status
Highest	Ref	–	Ref	–
Upper-Middle	0.8 (0.6, 1.0)	0.0232*	0.8 (0.6, 0.9)	0.0143*
Middle	0.7 (0.6, 0.9)	0.0009*	0.7 (0.5, 0.9)	0.0011*
Lower-Middle	0.6 (0.5, 0.8)	<0.0001*	0.6 (0.5, 0.7)	<0.0001*
Lowest	0.6 (0.5, 0.8)	<0.0001*	0.5 (0.4, 0.7)	<0.0001*
Marital Status
Married	Ref	–	Ref	–
Single/Divorced/Widowed	0.6 (0.5, 0.7)	<0.0001*	0.6 (0.5, 0.7)	<0.0001*
Year of Diagnosis
1988–1994	Ref	–	Ref	–
1995–2001	0.9 (0.7, 1.1)	0.3323	0.9 (0.7, 1.1)	0.4104
2002–2008	1.1 (0.9, 1.3)	0.3231	1.1 (0.9, 1.4)	0.3655
2009–2014	1.5 (1.3, 1.8)	<0.0001*	1.6 (1.3, 2.0)	<0.0001*

Abbreviations: OR = Odds Ratio, CI = Confidence Interval, Ref = Reference Group

⁺Adjusted for age at diagnosis, sex, race/ethnicity, neighborhood socioeconomic status, marital status, and year of diagnosis

^*Indicates statistical significance at 0.05 level