Table 2.

Hospitalization Rates by Principal Discharge Diagnosis Before and After Index Date of Intervention

Discharge DiagnosisPrior to Index DateDuring Follow-up
Crude Hospitalization Rate (per 100 person-years)Relative RateCrude Hospitalization Rate (per 100 person-years)Relative Rate
Intervention (N = 146)Controls (N = 437)Intervention (N = 146)Controls (N = 437)
Gastrointestinal diseases*
Cardiovascular diseases
    Ischemic heart disease2.
    Congestive heart failure2.
    Other circulatory diseases4.
Degenerative musculoskeletal diagnoses2.
Fractures and injuries0.
Chronic obstructive pulmonary disease or respiratory failure1.
Other diagnoses8.
  • * Includes International Classification of Disease, 9th Edition, Clinical Modification (ICD-9-CM) codes 520–579.

  • Principally osteoarthroses.

  • Includes fluid/electrolyte/metabolic disorders, syncope and collapse, renal failure, dementia or delirium, ear diseases, genital prolapse, nonspecific signs or symptoms, unspecified complications of medical or surgical care (ICD-9-CM 996–999), and anemia.