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  • Correlation analysis of vaccination coverage, positivity rate, and community mobility rate on COVID-19 effective reproductive rate: SIR modeling study from Indonesia

    Meirina Nur Asih Susanti1, Siti Nurrochmah2, Lucky Radita Alma3, Supriyadi Supriyadi4
    1. State University of Malang , ID
    2. State University of Malang , ID
    3. State University of Malang , ID
    4. State University of Malang , ID
    2025-06-03
    doi https://doi.org/10.56003/phosj.v1i1.534
    Published Online: 03 June 2025
    |
    page 80-96
    Abstract

    Background: Effective Reproduction Rate (Rt) is used to evaluate COVID-19 transmission; although Tegal City has the lowest cumulative cases in Central Java, the spread of the virus remains rapid. Intervention efforts are carried out through vaccination coverage, positivity rate, and level assessment as a shared responsibility to reduce the transmission rate.

    Objectives: The purpose of this study was to estimate the spread of COVID-19 with the intervention and to determine whether there is a correlation between the COVID-19 Rt Number and vaccination coverage, positivity rate, and level assessment situation in Tegal City.

    Methods: Observational quantitative research design. The type of research used was SIR (Susceptible Infected Removed) mathematical modeling and descriptive analysis through an ecological study approach and Spearman correlation statistical analysis.

    Results: The results of the study showed a decrease in the number of cases of vulnerable and infected subpopulations after public health interventions, followed by the results that the positivity rate and level assessment situation were significantly correlated with the strength of the relationship powerful to the Covid-19 Effective Reproductive Rate with values (r=0.856; p=0.00) and (r=-0.712; p=0.00), while vaccination coverage was not statistically significantly correlated with a value of (r=-0.209; p=0.137).

    Conclusions: The positivity rate and COVID-19 level assessment situation were statistically significantly correlated to the effective reproductive rate of COVID-19 in Tegal City with a strong correlation. Meanwhile, vaccination coverage did not correlate statistically with effective reproductive rate. Further studies must evaluate the effectiveness of combined interventions (vaccination + testing + mobility restriction) in various epidemiological settings.

    APA Citation Style
    Susanti, M. N. A. , Nurrochmah, S. , Alma, L. R. , & Supriyadi, S. (2025). Correlation analysis of vaccination coverage, positivity rate, and community mobility rate on COVID-19 effective reproductive rate: SIR modeling study from Indonesia. Public Health and Occupational Safety Journal, 80-96. https://doi.org/10.56003/phosj.v1i1.534

  • The relationship between quality and quantity of antenatal care services and stunting in children 24–59 months of age

    Aulia Pramesti1, Hartati Eko Wardani2, Tika Dwi Tama3, Anindya Hapsari4
    1. State University of Malang , ID
    2. State University of Malang , ID
    3. State University of Malang , ID
    4. State University of Malang , ID
    2025-06-14
    doi https://doi.org/10.56003/phosj.v1i1.539
    Published Online: 14 June 2025
    |
    page 97-113
    Abstract

    Background: Stunting is a chronic nutritional problem whose causes include unmet nutrition in pregnant women, lack of infant nutritional intake, and socioeconomic conditions. Dinoyo Health Center covers an area with a high stunting rate in Malang City, particularly Lowokwaru District. Previous research stated that the dominant factor causing stunting in toddlers is antenatal care (ANC).

    Objectives: This study aims to determine whether stunting in toddlers in the Dinoyo Community Health Center area is caused by the quality and quantity of ANC.

    Methods: The research method is observational analytic with a case-control design using a retrospective approach. The population was 1643 mothers taken from three villages: Tlogomas, Dinoyo, and Sumbersari. The research sample amounted to 69 people using purpose sampling. The research was conducted in February - March 2023. Quality measurement was based on a minimum 10T service standard, while quantity measurement was based on a minimum frequency of 4 visits using a checklist sheet instrument and MCH book with Chi-Square analysis.

    Results: The results obtained for ANC quality with stunting p-value = 0.609 with OR value = 1.30 (95% CI: 0.47-3.55), while ANC quantity with stunting p-value = 0.864 with OR value = 1.09 (95% CI: 0.40-2.97).

    Conclusions: It is concluded that the quality and quantity of antenatal care have no association with the incidence of stunting in children under 24-59 months in the Dinoyo Community Health Center (Puskesmas) area. These findings highlight the need for multifactor interventions beyond ANC to reduce stunting, such as improved maternal nutrition and environmental sanitation.

    APA Citation Style
    Pramesti, A. , Wardani, H. E. , Tama, T. D. , & Hapsari, A. (2025). The relationship between quality and quantity of antenatal care services and stunting in children 24–59 months of age. Public Health and Occupational Safety Journal, 97-113. https://doi.org/10.56003/phosj.v1i1.539
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