Table 2.

Association between Patient Characteristics and Completion of 24-Hour Urine Analysis

Patient Characteristics	Hazard Ratio	95% Confidence Interval
Age (years)	1.04	1.01–1.07
Family history	1.50	1.17–1.93
Prior Passage of Nephrolithiasis	1.07	0.84–1.37
Renal Colic	1.72	1.15–2.58
Neurogenic bladder	0.56	0.30–1.03
Race (Caucasian Referent)
Asian	1.42	0.51–3.93
Hispanic	1.42	0.91–2.20
African American	0.75	0.46–1.21
Other/unknown	1.25	0.86–1.81
Insurance (Private Insurance Referent)
Medicaid/Medical Assistance	0.68	0.48–0.96
Self Pay	1.04	0.33–3.32
Unknown	0.78	0.52–1.16