Alcohol use and risk factors for self-harm behavior in Spanish adolescents /Consumo de alcohol y factores de riesgo de conductas autolesivas en adolescentes espanoles

Self-harm behaviors in children and adolescents constitute an important public health problem with prevalence figures in the clinical population between 40 and 80%. The objectives of the study were to analyze and compare the Spanish sub-samples of two studies, SEYLE and WE-STAY to determine prevalence, self-harm patterns and factors associated with self-harm behaviors, notably the use of alcohol or drugs. The questionnaires used in both studies were the Global School Health Survey (GSHS), the Beck Depression Inventory (BDI-II), the Strengths and Difficulties Questionnaire (SDQ). The self-harm behaviors were evaluated with a modified 6-item version of s the Deliberate Self-Harm Inventory (DSHI). The independence of the study's categorical variables was assessed using the Chi-square test. The change in the relative risk of self-harm between the SEYLE study and WE-STAY was evaluated through the odds ratio (OR) calculation. Two different logistic regression models were calculated in order to establish the factors associated with self-harm behaviors in each study. In the present study, the rates of DSH vary according to study and sex, ranging from 0.58% to 2.08%, and different patterns of self-harm are evidenced by sex, with males self-injuring more frequently by self-inflicted blows and burns, while young women more often cut themselves. The presence of depressive symptoms and alcohol use were the factors most strongly associated with an increased risk of DSH. Key Words: Self-harm behaviors; Adolescents; Depression; Alcohol consumption; SEYLE; WE-STAY. Las conductas autolesivas en ninos y adolescentes constituyen un importante problema de salud publica con cifras de prevalencia en la poblacion clinica entre el 40 y 80%. Los objetivos del estudio son analizar y comparar las submuestras espanolas de dos trabajos, SEYLE y WE-STAY, para conocer la prevalencia, los patrones de autolesion y los factores asociados a las conductas autolesivas, en particular el consumo de alcohol o drogas. Los cuestionarios utilizados en ambos estudios fueron la Encuesta Global de Salud Escolar (GSHS), el Inventario de Depresion de Beck (BDI-II), el Cuestionario de Fortalezas y Dificultades (SDQ). Los comportamientos autolesivos fueron evaluados con una version modificada de 6 items basada en el Inventario de Autolesiones Deliberadas (DSHI). La independencia de las variables categoricas del estudio se evaluo mediante la prueba Ji-Cuadrado. El cambio en el riesgo relativo de autolesion