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Table 4
Relative risk (female versus male) of deliberate self-harm (DSH) in emergency department records under alternative definitions, by age group, population aged 12 or older, Ontario, April 1, 2001 to March 31, 2002

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Age group DSH1 DSH2 DSH3
Relative risk 95% confidence interval Relative risk 95% confidence interval Relative risk 95% confidence interval
from to from to from to
Total 1.60 1.54 1.66 1.46 1.42 1.51 1.27 1.23 1.30
12 to 17 3.32 3.01 3.66 2.76 2.54 2.99 2.12 1.98 2.28
18 to 64 1.48 1.42 1.54 1.36 1.32 1.41 1.19 1.16 1.23
65 or older 1.01 0.82 1.25 1.07 0.92 1.25 1.13 1.00 1.28
Notes: DSH1 excludes undetermined prestentations. DSH2 includes undetermined presentations if they involved cut/pierce injury or poisoning methods. DSH3 includes all undetermined presentations, regardless of method.
Source: National Ambulatory Care Reporting System, April 1, 2001 to March 31, 2002.
Table source: Statistics Canada, 2009, "Identifying deliberate self-harm in emergency department data", Health Reports, Vol. 20, No. 2, catalogue number 82-003-X.