However, it is unclear whether prevention programs with short-term success have sustainable long-term effects. Knox et al., (2010) noted that suicide programs may become less effective over time, and that the suicide rate may in fact rebound, due to the impact of changing circumstances and environment on ongoing implementation of program initiatives.Cheung Chau has a population of about 21,000 (Census & Statistical Department [C&SD], 2017a), and is situated about 10 km southwest of Hong Kong Island. A 30-min ferry ride connects the two places, and Cheung Chau is a popular vacation site well-known for holiday flats rented to Hong Kong residents. In 2002, a suicide prevention program using an integrative and multilevel approach was implemented in
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