MHLU - Health Status Resource

Leading Causes of Hospitalization

Leading Causes of Hospitalization

Key Findings: 
  • The leading cause of hospitalization in Middlesex-London was pregnancy and childbirth, followed by digestive diseases and circulatory system diseases (Fig. 4.6).
  • The top three leading causes of hospitalization were the same in Middlesex-London, Ontario and in the Peer Group, however, circulatory system diseases ranked higher for the Peer Group and Ontario than for Middlesex-London (Fig. 4.6).
  • Following pregnancy and childbirth, digestive diseases and injuries were the top causes of hospitalizations for females, both of which represented about 10% of all hospitalizations in Middlesex-London females (Fig. 4.7).
  • Circulatory system diseases were the leading cause of hospitalization among males in Middlesex-London, accounting for about 17% of all hospitalizations. The next leading cause was digestive diseases (16.0%) and injuries (13.0%) (Fig. 4.8).
  • For males and females in the youngest age group (0 to 9 years of age), respiratory diseases were the leading cause of hospitalization (Fig. 4.9).
  • The leading cause of hospitalization among females 10 to 19 years of age was pregnancy and childbirth and the leading cause among males of the same age was injuries (Fig. 4.10).
  • Nearly three quarters of the hospitalizations for females  20 to 44 years of age were due to reasons associated with pregancy and childbirth (Fig. 4.11).
  • The leading cause of hospitalizations for males in this age group was injury and poisoning followed by digestive diseases. The first and second leading causes for males in this age group each accounted for 25% of the overall hospitalizations (Fig. 4.11).
  • The leading cause of hospitalization among females 45 to 64 years of age was digestive diseases, followed by cancer and urinary diseases (Fig. 4.12).
  • Among males aged 45 to 64, the leading causes of hospitalization were circulatory system diseases, digestive diseases and cancer (Fig. 4.12).
  • The leading cause of hospitalization for both males and females 65 years of age and over was circulatory system diseases (Fig. 4.13).
  • The leading causes of hospitalizations in Middlesex County and the City of London were similar (Fig. 4.14). 
Interpretive Notes

To determine the leading causes of hospitalization, a single primary reason for hospitalization must be determined for each hospital visit despite the fact that individuals may have multiple inter-related diagnoses. This involves choosing the most responsible diagnosis or the diagnosis associated with the longest duration of treatment during a given hospital stay. Diagnoses are classified using the Canadian modification of the International Statistical Classification of Diseases and Related Health Problems, Tenth Revision (ICD-10-CA).  They are grouped at the ‘chapter’ level in this report.  For more information about what diagnoses are included in each ICD-10-CA chapter please consult http://apps.who.int/classifications/icd10/browse/2010/en

How this Indicator was Calculated: 
Ontario Public Health Standard: 

Population Health Assessment and Surveillance Protocol - Section 1, Subsections b-i, ii

Chronic Disease Prevention Standard - Requirement #1

Prevention of Injury and Substance Misuse Standard - Requirement #1

Jargon Explained

Diagnosis Classification 

Diagnoses are classified using the Canadian modification of the International Statistical Classification of Diseases and Related Health Problems, Tenth Revision (ICD-10-CA). 

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