Public Health Research Development

Classroom Noise and Its Impact on Communication Disruptions and Students’ Academic Performance

2025-07-04T04:14:52+00:00

Noise in classrooms can disrupt communication between teachers and students, potentially affecting learning outcomes. Previous research indicates that noise exceeding environmental health standards may contribute to communication difficulties during lessons. This study aimed to analyze the effect of classroom noise and communication disruptions on students’ learning achievement. An observational analytic study with a cross-sectional design was conducted among 4^th and 6^th grade students at one of the elementary schools in South Surabaya. Noise levels were measured in the classrooms, and students were assessed for communication disruptions and learning achievement. Logistic regression was used for data analysis. All classrooms exceeded the environmental health noise threshold of 55 dB(A), with an average level of 67.45 dB(A). Noise was significantly associated with communication disruptions (OR = 5.118; p = 0.012). Classroom noise increased the risk of communication disruptions but did not directly affect students’ learning achievement. It is recommended to install soundproof partitions and double-glazed windows to reduce noise. Future studies should investigate the interaction between teaching methods and student achievement.

Environmental Health Risk Assessment of Particulate Matter (PM2.5) and Worker Characteristics on Lung Function of Tropodo Tofu Factory Workers in Sidoarjo

2025-09-26T17:06:55+00:00

In conclusion, workers at the Tropodo tofu factory are exposed to high levels of PM_2.5, which may contribute to decreased lung function, particularly among older workers. Continuous air quality monitoring and engineering control measures are recommended to reduce occupational exposure and protect worker health.The tofu industry is a sector that potentially generates fine particulate matter (PM_2.5) pollution, which can reduce workers’ lung function. Exposure to PM_2.5 in the workplace is a significant issue due to its direct impact on respiratory health. This study aims to analyze the risk of PM_2.5exposure and worker characteristics on lung function at the Tropodo Tofu Factory, Sidoarjo. This research used an analytical observational design with a cross-sectional approach involving 20 workers selected based on inclusion criteria. PM_2.5concentrations were measured using a Dust Particle Counter TC-8200 PM_2.5, while lung function was tested using spirometry and questionnaires on smoking habits and age. Data were analyzed using univariate and correlation analyses. The results showed an average PM_2.5concentration of 288 µg/m³, exceeding the national ambient air quality standard (55 µg/m³). The mean FEV1 value indicated a moderate decline in lung function. A significant correlation was found between PM_2.5 exposure and workers’ age with lung function. In conclusion, PM_2.5exposure in tofu production environments poses health risks to workers’ respiratory function. It is recommended that the factory increase the use of personal protective equipment and adopt cleaner combustion technologies to reduce PM_2.5emissions.

Environmental and Larval Indices as Predictors of Dengue Hemorrhagic Fever: A Five-Year Spatial Study in Surabaya, Indonesia

2025-07-30T09:44:21+00:00

Dengue Hemorrhagic Fever cases are one of the public health problems that are endemic in the Sememi Health Center working area. This study analyzes the relationship between environmental factors that influence dengue fever cases, including the larval index, rainfall, temperature, and humidity in the working area of the Sememi Community Health Center, which recorded 183 cases from 2020 to 2024.This study utilized a cross-sectional analytical design, with analysis conducted on 60 monthly secondary data collected over five years. The correlation test results show that only the number of free larvae has a significant relationship with cases of dengue fever (Sig.= 0.000), while other climate factors do not. These findings confirm the crucial role of the number of free larvae as a determining indicator of dengue fever cases. The main limitation of this study is the aggregate and secondary nature of the data, which does not allow for confirmation of cause and effect, but only correlation. Based on these findings, it is recommended that the Mosquito Nest Eradication program be strengthened as a top priority in efforts to control dengue fever.