Academic stress is widely recognized as a prominent source of stress for adolescents in Hong Kong. Some NGOs, such as The Hong Kong Federation of Youth Groups, have mobile counseling services for reducing such stress. When evaluating the impacts of these counseling services, can we infer their effectiveness from the number of youths they have served?

Academic stress is widely recognized as a prominent source of stress for adolescents in Hong Kong. Some NGOs, such as The Hong Kong Federation of Youth Groups, have mobile counseling services for reducing such stress. When evaluating the impacts of these counseling services, can we infer their effectiveness from the number of youths they have served?