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All Journal Universa Medicina Jurnal Respirologi Indonesia Oto Rhino Laryngologica Indonesiana Jurnal Dharma Bhakti Ekuitas Metta : Jurnal Ilmu Multidisiplin JUARA: JURNAL WAHANA ABDIMAS SEJAHTERA Jurnal Indonesia Sosial Sains AMMA : Jurnal Pengabdian Masyarakat
David Tjahyadi
Universitas Trisakti
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Other

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Hubungan Penggunaan Rokok Elektrik Dan Perilaku Merokok Konvensional Dengan Fungsi Kognitif Pada Pelajar SMAN 90 Jakarta Flavius Vania; David Tjahyadi
Metta : Jurnal Ilmu Multidisiplin Vol. 6 No. 3 (2026)
Publisher : Jayapangus Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37329/metta.v6i3.5668

Abstract

Conventional smoking behavior and e-cigarette use among adolescents continue to increase and have the potential to decrease cognitive function, particularly concentration, memory, and learning ability. High school adolescents are an age group undergoing important brain development, so nicotine exposure from both conventional and e-cigarettes can impact cognitive function and academic achievement. This study aims to determine the relationship between conventional smoking behavior and e-cigarette use and cognitive function in high school students. This study used an observational analytical design with a cross-sectional approach. The study was conducted at SMAN 90 in April 2026, with a sample of 138 12th-grade students selected using simple random sampling. Data on conventional smoking behavior and e-cigarette use were collected using the Glover-Nilsson Smoking Behavioral Questionnaire (GN-SBQ), while cognitive function was assessed using the Indonesian version of the Montreal Cognitive Assessment (MoCA-Ina). Data were analyzed univariately and bivariately using the chi-square test with a significance level of p<0.05. The study showed a significant relationship between conventional smoking behavior and cognitive function in high school students (p<0.001). E-cigarette use was also significantly associated with decreased cognitive function in high school students (p<0.001). Students with higher levels of smoking dependence tended to have lower cognitive function scores than non-smokers. There is a relationship between conventional smoking behavior and e-cigarette use and cognitive function in high school students. Efforts to educate and prevent smoking among adolescents need to be increased to maintain cognitive health and academic achievement.
Korelasi Rasio Neutrofil-Limfosit Dengan Derajat Keparahan Demam Dengue Pada Anak Putri Suspita Faizal; David Tjahyadi
Metta : Jurnal Ilmu Multidisiplin Vol. 6 No. 3 (2026)
Publisher : Jayapangus Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37329/metta.v6i3.5689

Abstract

Dengue fever in children remains an important health problem due to the risk of rapid progression to a critical phase. The neutrophil-lymphocyte ratio (NLR) is an easily obtainable inflammatory marker that has been proposed to reflect disease severity, although previous findings remain inconsistent. This study aimed to evaluate the correlation between NLR and the severity of dengue fever in pediatric patients. A cross-sectional study was conducted using 48 medical records of children aged 1–18 years who were diagnosed with dengue fever and treated at UKI General Hospital from January 2023 to October 2025. The sample was picked by using consecutive non-random sampling. The analyzed variables included neutrophil count, lymphocyte count, NLR value, and disease severity classified according to the World Health Organization 2009 criteria. Statistical analysis was performed using a Spearman correlation test, with p < 0.05 considered statistically significant. The majority of patients were male, with a mean age of 9.29 years. The mean NLR value was 3.28, with a median of 2.59 and a range of 0.28–10.38. Most cases were classified as dengue with warning signs, and no cases of severe dengue were identified. Correlation analysis showed no significant association between NLR and dengue severity (r = 0.094; p = 0.527). In conclusion, NLR was not significantly associated with disease severity and therefore cannot be used as a single predictive indicator of dengue fever severity in pediatric patients.
Co-Authors Alfred Pakpahan Alfred Pakpahan Ashri Yudhistira Dewi Hastuty Ditriana, Ditriana Djebli, Noureddine Edy Parwanto Endrico Xavierees Tungka Flavius Vania Gabrielle, Laurentia Hairunisa, Nany Hanslavina Arkerman, Hanslavina Haryo Ganeca Widyatama Haryo Ganeca Widyatama Hosea Jaya Edy Husnun Amalia Joey Joshua Vidova Tjahyadi John Steward Castellano ML Eddy Parwanto ML Edy Parwanto ML Edy Parwanto Monica Dwi Hartanti Monica Dwi Hartanti, Monica Dwi MZ Onibala, MZ Oladimeji, Ashaolu Victoria Orliando Roeslan Parwanto, Edy Putri Suspita Faizal Reza Aditya Digambiro Reza Aditya Digambiro Sahat Elia Carlos Siahaan Sisca Sisca Sisca Sisca Sisca Sisca Sisca Sisca Sisca, Sisca Suriyani Suweino Suweino Tiara Alya Fauziyah Tjahyadi, Joey Joshua Vidova Widyatama, Haryo Ganeca Xavierees, Endrico Yani Kurniawan