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Table 1 Summary of method substitution in ecological studies

From: Trends in solids/liquids poisoning suicide rates in Taiwan: a test of the substitution hypothesis

Authors

Years

Location

Target

method

Substituted

method

Subpopulation

Burvill et al [12]

1910-1987

Australia

Domestic gas

Car exhaust

Males

Lester [3]

1950-1970

United States

Domestic gas

Car exhaust

Males

Gunnel et al [13]

1950-1975

England

Gassing

Overdose

Women or

young men

Rich et al [8]

1973-1983

Canada

Gun

Jumping

Males

Caron [14]

1986-1996

Quebec*

Gun

Hanging

The youths

Amos et al [15]

1987-1998

England

Car exhaust

Hanging

The young

  1. * Northern Quebec (Abitibi-Temiscamingue)