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All Journal Jurnal Biologi Tropis
I Putu Diatmika
Universitas Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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The Relationship Between Insomnia and Suicidal Behavior in Adolescents at SMAN 11 Mataram Nensy Dwi Astika; I Putu Diatmika; Lale Justin Amelinda Elizar; Arfi Syamsun
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): Juli - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i3.12264

Abstract

Adolescence is a vulnerable period for mental health problems, including suicidal behavior. Insomnia is frequently experienced by adolescents and may be associated with emotional dysregulation and psychological distress. This intention of this study was to analyze relationship between insomnia and suicidal behavior among adolescents at SMAN 11 Mataram. This analytical observational study used a cross-sectional design involving 89 students of SMAN 11 Mataram. The sample size was determined using the Slovin from a population of 113 students with a 5% margin of error. Sampling was conducted using stratified random sampling based on grade level: grade 10(29 students), grade 11(36 students), and grade 12(48 students), with proportional random selection resulting in 23, 28, and 37 students, respectively. Data were collected using the validated Indonesian version of the Insomnia Severity Index (ISI) and Suicide Behaviors Questionnaire-Revised (SBQ-R). Insomnia was categorized based on ISI score ≥10, while suicidal behavior risk was identified using SBQ-R score ≥7. Reliability analysis showed Cronbach’s alpha values of 0.750 for ISI and 0.896 for SBQ-R.Spearman’s rank correlation test showed a significant association between insomnia and suicidal behavior (r = 0.229; p = 0.031). It was concluded there is a positive association between insomnia and suicidal with a weak correlation.    
The Relationship Between Depression and Suicidal Behavior in Adolescents at SMAN 2 Mataram Tadbir Kusuma Putra; I Putu Diatmika; Lale Justin Amelinda Elizar; Pujiarohman Pujiarohman
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): Juli - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i3.12299

Abstract

Adolescence is a vulnerable period for mental health problems, particularly depression, which has been associated with suicidal behavior. Suicide remains a major public health concern among young people, with 1,350 cases reported in Indonesia in 2023.This analytical observational study used a cross-sectional design implicate 306 students selected through stratified random sampling based on grade level (10th, 11th, and 12th grade) with proportional allocation from each stratum. Data were collected using the Indonesian version of the Beck Depression Inventory-II (BDI-II) and Suicide Behaviors Questionnaire-Revised (SBQ-R). The BDI-II includes a total of 21 questions that can yield scores between 0 and 63, which are divided into categories of minimal, mild, moderate, and severe depression. In contrast, the SBQ-R features 4 questions that evaluate the risk of suicidal behavior. Both instruments demonstrated good validity and internal consistency, with Cronbach’s alpha values of 0.90 for BDI-II and 0.896 for SBQ-R. Data were examined through the application of Spearman's correlation analysis. The findings revealed a significant positive relationship between depression and suicidal actions (r = 0.420; p < 0.001), suggesting a moderate connection between these two factors. Among the adolescents at SMAN 2 Mataram, depression was found to be positively linked with suicidal behavior, displaying a moderate correlation; nonetheless, causation cannot be determined because of the cross-sectional study design.
Co-Authors Arfi Syamsun Lale Justin Amelinda Elizar Nensy Dwi Astika Pujiarohman Pujiarohman Tadbir Kusuma Putra