Data was collected from patient files provided by the pre-hospital emergency services of Fars province according to the case report form. This form includes information regarding demographic information (age, gender), burn related information (cause, severity, and degree of burn), hospital transfer (outpatient surgery or hospital transfer) and the outcome of the disease (death before reaching to the hospital or alive).
Degree of burns: It classifies into 4 degrees. Depth and intensity of burn lesion increase from 1st to 4th degree. In First-degree or superficial burns, only the epidermis is involved. In second-degree or semi-deep burns, a part of the dermis is involved as well. In third-degree or deep burns, the entire dermis is destroyed and often the underlying subcutaneous tissue is also affected. Finally, in fourth-degree burns, the underlying tissues such as muscles or bones are also affected.
Determination of degree of burn: For determination of the degree of burns, the rule of nine was used, which is attached below [12 (link)]. The rule of nine is more applicable to adults. Head, both upper limbs, both lower limbs, anterior and posterior of the trunk are equivalent to 9,9,18 and 18 percent of the body area respectively.
Cause and type of burns: Heat damage (boiling water and direct contact with hot objects, petrol, flame, gas cylinder explosion, gas heaters or cylinder stoves, fire and Incendiary explosion), electrical and chemical burns (acid, base, caustics)
Statistical analysis: Statistical analysis was done using SPSS software 25.0 version, and data was presented as mean±standard deviation. The Chi-square test was performed for comparing categorical data. t-test and ANOVA were also used to compare the average of two and more than two groups. Statistical data ≤0.05 was considered significant.