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Alcohol and illicit drug dependence.
1Health Statistics Division, Statistics Canada, Toronto, Ontario. Michael.Tjepkema@statcan.ca
Health Reports
|March 8, 2005
Summary
In 2002, 2.6% of Canadians aged 15+ were alcohol-dependent and 0.8% were illicit drug-dependent. Both groups showed higher depression rates, with heavy drinking and depression posing risks for each other.
Area of Science:
- Public Health
- Epidemiology
- Mental Health Research
Background:
- Substance dependence and depression are significant public health concerns in Canada.
- Understanding the prevalence and comorbidity of these conditions is crucial for effective intervention strategies.
Purpose of the Study:
- To estimate the prevalence of alcohol and illicit drug dependence in Canadians aged 15 and older.
- To examine the comorbidity of substance dependence with depression.
Main Methods:
- Utilized data from the 2002 Canadian Community Health Survey: Mental Health and Well-being and the National Population Health Survey.
- Employed cross-tabulations to determine prevalence and logistic regression to analyze associations and temporal relationships.
Main Results:
- In 2002, an estimated 641,000 Canadians (2.6%) were alcohol-dependent and 194,000 (0.8%) were illicit drug-dependent.
- Individuals with substance dependence exhibited higher depression levels compared to the general population.
- Frequent heavy drinking was a risk factor for new depression episodes, and depression increased the risk for new cases of frequent heavy drinking.
Conclusions:
- Alcohol and illicit drug dependence are prevalent among Canadian adults and are strongly associated with depression.
- A bidirectional relationship exists between heavy drinking and depression, highlighting the need for integrated treatment approaches.