Abstract
ObjectiveThis study determined the proportion of incident colorectal and lung cancers with a diagnosis associated with an emergency department (ED) visit. The characteristics of these patients and the correlation between diagnosis near an ED visit and stage at diagnosis were also examined. MethodsA population-based sample of all Michigan cancer cases diagnosed in all EDs and other health care settings was used to extract a sample of patients >65 years old, diagnosed with colorectal and lung cancers between January 1, 1996, and June 30, 2000 (n = 20 311). Logistic regressions were used for the statistical analysis. ResultsPatients with a colorectal cancer diagnosis associated with an ED visit were more likely insured by Medicaid before diagnosis (odds ratio [OR], 1.37; 95% confidence interval [CI], 1.17-1.60), had an inpatient admission before diagnosis (OR, 1.29; 95% CI, 1.06-1.56), had 3 or more comorbidities (OR, 4.11; 95% CI, 3.53-4.79), were more likely to be female (OR, 1.18; 95% CI, 1.07-1.31), and were more likely to be aged 85 years and older (OR, 1.89; 95% CI, 1.57-2.27). Patients who had at least one primary care physician (PCP) visit before diagnosis were less likely to have a diagnosis associated with an ED visit (OR, 0.68; 95% CI, 0.61-0.76). Patients diagnosed with lung cancer in association with an ED visit were also more likely to have an inpatient admission before diagnosis (OR, 1.21; 95% CI, 1.02-1.43), a higher comorbidity burden (OR, 12.44; 95% CI, 10.18-15.20), be female (OR, 1.13; 95% CI, 1.02-1.25), African-American (OR, 1.42; 95% CI, 1.21-1.66), and older (80 years and older) (ages 80-84 years: OR, 1.33; 95% CI, 1.13-1.57; age 85 years and older: OR, 1.52; 95% CI, 1.25-1.85). Patients with an ED visit near a colorectal cancer (OR, 1.28; 95% CI, 1.15-1.42) or lung cancer diagnosis (OR, 1.65; 95% CI, 1.44-1.88) were more likely to be diagnosed at a later stage compared with patients diagnosed in other settings. ConclusionsAn examination of patients' patterns of care leading to a cancer diagnosis in association with an ED visit lends insight to conditions precipitating a more immediate diagnosis and their associated outcomes.
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