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Table 4 Reduction across ICD-9 Chapters in the 12 months before-after analysis

From: Case management intervention of high users of the emergency department of a Portuguese hospital: a before-after design analysis

  Before After Variation
Diseases of the Digestive System 54 21 -61%*
Mental Disorders 237 97 -59%*
Diseases of the Genitourinary System 121 52 -57%*
Injury and Poisoning 133 61 -54%*
Supplementary Classification of Factors Influencing Health Status and Contact with Health Services 63 29 -54%*
Symptoms, Signs, and Ill-defined Conditions 331 169 -49%*
Diseases of the Circulatory System 95 52 -45%*
Diseases of the Respiratory System 98 67 -32%*
Neoplasms 5 1 -80%
Diseases of the Blood System and Blood-forming Organs 26 6 -77%
Supplementary Classification of External Causes of Injury and Poisoning 17 7 -59%
Disease of the Skin and Subcutaneous Tissue 12 5 -58%
Diseases of the Nervous System and Sense Organs 74 33 -55%
Endocrine, Nutritional and Metabolic Disease and Immunity Disorders 34 16 -53%
Diseases of the Musculoskeletal System and Connective Tissue 100 61 -39%
Infectious and Parasitic Disease 12 11 -8%
  1. * p < 0.05, one-tailed t-test for the reduction in mean