مطالعه همبستگی بین نوسانات آب و هوایی و میزان خودکشی در تبریز، شمال غرب ایران

In this study the data relating to annual precipitation and annual suicide rates have been used for Tabriz metropolitan in a 37 year period (1968-2005) aspiring at the calculation of Pearson correlation coefficient between annual precipitation and suicide rates in Tabriz Metropolitan area. The main methodologies used are different conceptual statistical techniques including regression analysis and the consideration of changes in environmental elements through utilization of maps extracted from satellite images. The suicide rates in Tabriz are shown to be related to annual precipitation, supporting a widespread and long-held supposition that drought in Tabriz increases the probability of suicide commitment. The relationship although statistically significant, is not especially strong and, long-term variations in the suicide rates are not solely related to precipitation variations. A decrease in precipitation of about 218 mm might lead to an increase in suicide rates of nearly 9.3% of the long-term mean.