Map of Simcoe Muskoka

Leading Causes

Leading Cause of Emergency Visits

Overall
By Sex
By Age Group

Overall

The leading causes of emergency visit used for this page are based on the chapters found in International Statistical Classification of Diseases and Related Health Problems, Tenth Revision (ICD-10) and the International Shortlist for Hospital Morbidity Tabulation (ISHMT) adopted by the World Health Organization (WHO) 1 with modifications discussed and approved by the Leading Cause Group subcommittee of the Core Indicators Working Group, Association of Public Health Epidemiologist in Ontario (APHEO).

Emergency visits are counted at patient exit as recorded in the National Ambulatory Care Reporting System (NACRS). Causes are based on the one main problem diagnosed by a physician during a given emergency visit. Emergency visits due to pregnancy and birth (ICD-10Chapter 15) were excluded, because these do not represent burden of illness and are captured in the birth outcomes statistics (see Pregnancy and Before). Factors influencing health status & contact with health services (ICD-10Chapter 21) and provisional codes for research and temporary assignment (ICD-10 Chapter 23) were excluded as they do not represent diseases or conditions.

In 2017, there were more than 280,000 emergency visits (as defined above) among residents of Simcoe Muskoka. The number one cause of visit, by ICD-10 chapter, in Simcoe Muskoka were injuries & poisonings, which accounted nearly one-quarter of all visits. The other leading causes of emergency visits, by ICD-10 chapter, in Simcoe Muskoka during this time period were: symptoms, signs and abnormal clinical and laboratory findings (19%), diseases of respiratory system (12%) and diseases of musculoskeletal system (7%).

The leading causes of emergency visits for Ontario as a whole in 2017 were similar to what was observed in Simcoe Muskoka; however, the proportion of visits for injuries and poisonings and diseases of respiratory system were higher in Simcoe Muskoka when compared with Ontario as a whole.

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When looking at the ISHMT causes 1 of emergency visits in Simcoe Muskoka for 2017, acute upper respiratory illness was the leading cause, accounting for 6% of all visits. Other leading causes include: abdominal and pelvic pain, pain in throat and chest, diseases of the ear, skin infections, diseases of the ear and mastoid process, and soft tissue disorders.

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By Sex

In Simcoe Muskoka in 2017, the leading cause of emergency visit, by ICD-10 chapter, for both males and females were injuries & poisonings. However, the proportion of emergency visits for injuries & poisonings was higher for males (28%) when compared with females (22%). Symptoms, signs and abnormal clinical and laboratory findings and diseases of respiratory system were the second and third leading cause for both sexes. Emergency department visits for diseases of the genitourinary system (urinary and genital organs) were much more common among females when compared with males.

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The leading cause of emergency visit, according to the ISHMT groupings 1, for males in Simcoe Muskoka in 2017 was acute upper respiratory illness which accounted for 5% of all emergency visits. Pain in throat and chest, skin infections, abdominal and pelvic pain, diseases of the ear and mastoid process, and soft tissue disorders were also among the leading causes of emergency visits for Simcoe Muskoka males.

The leading cause 1 of emergency visit among Simcoe Muskoka females during this time period was also acute upper respiratory illness, which accounted for 6% of all visits. Abdominal and pelvic pain, pain in the throat and chest, diseases of the ear and mastoid process, soft tissue disorders, and back pain were also among the leading causes of emergency visits for females in 2017.

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By Age Group

In Simcoe Muskoka in 2017, the leading causes of emergency visit, by ICD-10 chapter, among infants less than one year were: diseases of respiratory system, symptoms, signs and abnormal clinical/lab findings, and infectious or parasitic diseases, which accounted for about two-thirds of all visits. During the same time period, among children one to nine years of age, diseases of the respiratory system and injuries & poisonings were the leading causes of emergency visit, accounting for more than half of all visits. The most common form of respiratory illnesses among children under 10 years of age were acute upper respiratory illnesses.

Injuries & poisonings was the leading cause of emergency visit among youth and adolescents (between 10 and 19 years of age) in Simcoe Muskoka, accounting for more than one-third of all emergency visits in 2017. Injuries & poisonings was also the leading cause of emergency visit among young adults (20-44 years), accounting for about one-quarter of all visits.

Symptoms, signs and abnormal clinical/lab findings was the leading cause of emergency visit for older adults and seniors in 2017, accounting for more than one-fifth of all emergency visits, followed by injuries & poisonings which accounted less than one-fifth of all visits. The table below provides age-specific leading causes of emergency visit using both ICD-10 chapters and ISHMT groupings 1 for Simcoe Muskoka in 2017.

Leading Causes of ED Visits, Simcoe Muskoka Residents, by Age Group, 2017

AGE
GROUP

# OF ER VISITS

ICD-10
CHAPTER

ISHMT
GROUPING

<1 yr

5,155

Respiratory Diseases - 31%
Symptoms & Signs - 20%
Infectious or Parasitic Diseases - 13%

Acute Upper Resp./Flu – 20%
Diseases of the Ear - 5%
Diarrhoea/Gastro – 3%

1-9 yrs

28,495

Respiratory Diseases - 26%
Injuries or Poisonings - 26%
  Symptoms & Signs- 14%

Acute Upper Resp./Flu – 19%
Diseases of the Ear - 10%
Pneumonia – 3%

10-19 yrs

28,946

Injuries or Poisonings - 39%
Symptoms & Signs - 17%
Respiratory Diseases - 11%
Mental/Behavioural Disorders - 7%

Acute Upper Resp./Flu – 8%
Abdominal/Pelvic Pain - 5%
Diseases of the Ear - 3%
Intracranial Injury – 2%

20-44 yrs

85,732

Injuries or Poisonings - 27%
Symptoms & Signs - 19%
Respiratory Diseases - 10%
Musculoskeletal Diseases - 8%

Abdominal/Pelvic Pain - 6%
Acute Upper Resp./Flu - 6%
Pain in Throat/Chest – 4%

45-64 yrs

70,464

Injuries or Poisonings - 23%
Symptoms & Signs - 20%
Musculoskeletal Diseases - 10%
Respiratory Diseases - 9%

Pain in Throat/Chest – 6%
Abdominal/Pelvic Pain - 4%
Soft Tissue Disorders - 4%
Back Pain - 4%

65-74 yrs

30,377

Symptoms & Signs - 22%
Injuries or Poisonings - 18%
Respiratory Diseases - 10%
Circulatory Diseases - 10%

Pain in Throat/Chest - 5%
COPD - 4%
  Abdominal/Pelvic Pain - 3.5%

75+ yrs

37,680

Symptoms & Signs - 23%
Injuries or Poisonings - 18%
Circulatory Diseases - 11%
  Respiratory Diseases - 10%

Pneumonia – 4%
COPD - 4%
Pain in Throat/Chest – 3%

Data source: Ambulatory Visits [2017], Ontario Ministry of Health and Long-Term Care, IntelliHEALTH ONTARIO, Date Extracted: [September 24, 2018]. 

References 1. Source:International Shortlist for Hospital Morbidity Tabulation, Eurostat, OECD, & WHO, November 2008. [cited 2010 December 13]. Available from: http://apps.who.int/classifications/apps/icd/implementation/hospitaldischarge. Any single-cause diagnosis beginning with ‘Other’ was grouped together with ‘All Others’ (e.g. (120) Other Injuries).