According to the results, the majority of the examined individuals, i.e. 53.3%, were in the age group of 10-30 years with elementary and below education, 60% of whom were single which met the presented statistics by similar studies. In a 4-year long study by Maghsoudi et al. 99% of the committers of self-immolation were females of 25.5 average age, the majority of whom were housewives, illiterate, and economically disadvantaged (
17). Rezaie et al. in another 4-month long study in Kermanshah reported that 62.5% of suicide committers were female, 57.8% were married, and 43.8% were in the age group 15-24 years (
18). A 10-year study by Sheth et al. reported that the most incident suicide attempts were in females (
19). Similarly, Zatghami and Khalilian in another study in Mazandaran declared that most committers were in the age group of 14-30 years, single, and low literate. As was the case with the study by Amirmoradi et al. who reported that the most cases of self-immolation committers in the age group of 21-25 years and low literate (
15).
In their 2-year epidemiological study on self-immolation, Laloe and Ganesan reported that 79% of the victims were female in the age group of 15-34 years and concluded that the most prevalent cause of self-immolation to be conjugal problems (
20). However, studies conducted in different parts across the globe have reached different findings. As stated by Poeschla and Combs subsequent to their study from 1973 to 2010, epidemiological criteria as well as psychological risk factors and methods of committing self-immolation are different in high versus low income countries. Self-immolation in low income countries is most prevalent in females and associated with psychiatric records, whereas, in high income countries the majority of committers of self- immolation are male (
21). Furthermore, according to the conducted studies the most prevalent causes of self-immolation are reported to be family problems 40%, physical illnesses 16.6%, romantic relationships 16.6%, financial issues 13.3%, and conjugal fights 10%. As concluded by Amirmoradi et al. (
22), 93.4% of women experienced their husbands’ physical and verbal abuse, 60% of which deemed their husbands as the main instigators of self-immolation. Subsequent to a 10-year investigation on 46 cases of self-immolation (36 males and 11 females) from 1990 to 2000, Rothschild and Raatschen introduced separation and financial problems as the main causes of self-immolation, and found that 65% of the cases had records of psychological disorders (
23). Makhlouf and Alvarez, on the other hand, reported the main cause of self-immolation as emotional and financial problems, based on 18 years of investigating suicide attempts. Among the cases studied by Rezaei and Farzaneh, 29.7% had records of psychological illness, 15.6% had records of chronic physical illness, and four cases suffered from both. Out of the 31 participants in a 10-year retrospective study by Castellani and Beghini, six cases had records of opioids dependency and three suffered from Aids (
7). Palmu and Isometsa et al. in an 8-year retrospective study in Finland in 2004 (
24), as well as Michael in a worldwide study on self-immolation declared the most prevalent causes of self-immolation as to be consequences of unemployment and family internal conflicts (
25). The findings of the present study showed that there was a significant difference between the two groups in terms of the degree of characteristics of depression, hypochondriasis, hysteria, and psychopathic deviation which conforms to the results of similar studies. According to Lopez and Castromani et al. the most prevalent causes of suicide attempts are mood disorders, anxiety disorders, and alcohol and opioids abuse disorders. In their study, Donald and Cameron maintained that 71% of the studied cases suffered from schizophrenia, depression, and personality disorder (
26). García-Sánchez, Palao & Legarre reported that 63% of the studied cases suffered from one psychiatric disorder (
3). In a 5-year study in north-western Thames, Davidson concluded that more than 3.4 of attempters of suicide had records of psychological disorder.