Abstract
As an important quality measure, the rates of recommended immunizations among immunocompromised inflammatory bowel disease (IBD) patients in community practice have not been well studied. This study sought to investigate the rates and predictors of recommended immunizations and screening tests among IBD patients receiving anti-tumor necrosis factor (TNF) therapy in a large integrated healthcare organization. We conducted a retrospective cohort study of 1401 IBD patients on anti-TNF therapy between 2010 and 2013 within the Kaiser Permanente Northern California healthcare system. The rates of vaccinations and screening tests were quantified, and the associated predictors were investigated. Vaccination rates for influenza and pneumococcus were 43.5 and 24.1%, respectively. The majority of patients (73.7%) received hepatitis B screening and/or vaccine. Patients receiving infliximab had higher rates of pneumococcal vaccine (P=0.002), hepatitis B screening (P<0.001), and tuberculin skin test (P<0.001) compared with patients receiving adalimumab. Older patient age (≥50years) was associated with higher likelihood of having HBsAg test (odds ratio [OR] 1.5, 95% confidence interval [CI] 1.2-2.0, P=0.002), influenza vaccine (OR 2.6 [2.1-3.4], P<0.001), and pneumococcal vaccine (OR 4.0 [3.0-5.3], P<0.001). In contrast, older providers (≥50years) were associated with significantly lower likelihood of their patients' having hepatitis A and B screening tests, and pneumococcal vaccination. The rates of immunizations for IBD patients receiving anti-TNF treatment were lower than recommended. Structured reminders for vaccinations and education for both patients and providers (older physicians in particular) may prove beneficial in improving immunization rates among immunocompromised IBD patients.
Published Version
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