Duffy J C
Br J Prev Soc Med. 1977 Jun;31(2):109-15. doi: 10.1136/jech.31.2.109.
This paper presents frequency distributions of parasuicidal episodes (suicide attempts) in Edinburgh for four subgroups of people for each of the years 1970, 1973, and 1974. Probability distributions are fitted to these data and it is shown that the log-series distribution best fits the data for two subgroups. The stability of the parameters of these distributions is examined and is demonstrated for two of the subgroups.
本文呈现了1970年、1973年和1974年爱丁堡四个亚组人群的准自杀事件(自杀未遂)的频率分布。对这些数据进行概率分布拟合,结果表明对数级数分布最适合其中两个亚组的数据。研究了这些分布参数的稳定性,并对其中两个亚组进行了论证。