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The trend analysis of COVID-19 cases before and after the Large-Scale Social Restriction (PSBB) in four provinces in Indonesia


Purpose: As the intervention of COVID-19 pandemic, Indonesia implemented Large Scale Social Restriction (PSBB). The aim of present research was to evaluate daily new cases, active cases, and daily death of COVID-19 before and after the implementation of PSBB in 4 provinces: Jakarta, West Sumatra, Gorontalo, West Java.

Methods: Each parameter observed on four different time P0 (14 days before PSBB), P1 (0-13 days after PSBB), P2 (14-27 days after PSBB), and P3 (28-41 days after PSBB) from March 27, 2020 until May 22, 2020. Polynomial model was used to construct the trend of new cases and predicted active cases. The difference of the increase of new cases and the mean of death rate between periods was analysed using dependent T-test. The difference between predicted and measured active cases was analysed by independent T-test.

Results: COVID-19 daily new cases increased at P1 in Jakarta and West Sumatra and differed at P2 and P3, while declined since P1 in Gorontalo and West Java. There was significant higher of COVID-19 active cases compare to predicted active cases at P1 in all provinces, except West Java. The trend of declining daily death after PSBB implementation was observed in all provinces.

Conclusion: Different trends were observed in four provinces after the implementation of PSBB, which showed random trend of daily cases, mainly increase trend of active cases, and decrease trend of daily death. However, the length of PSBB implementation also differ, therefore prolonged observation was needed to evaluate the consideration of PSBB program continuation.


  1. Lu H, Stratton CW, Tang YW. Outbreak of pneumonia of unknown etiology in Wuhan, China: The mystery and the miracle. J Med Virol. 2020; 92:401–2.
  2. World Health Organization. Naming the coronavirus disease (COVID-19) and the virus that causes it. New York: World Health Organization, 2020. Available from:
  3. World Health Organization. WHO announces COVID-19 outbreak a pandemic. New York: World Health Organization, 2020. Available from:
  4. Viner RM, Russell SJ, Croker H, Packer J, Ward J, Stansfield C et al. School closure and management practices during coronavirus outbreaks including COVID-19: a rapid systematic review. Lancet Child Adolesc Heal. 2020; 4:397–404.
  5. Wilder-Smith A, Freedman DO. Isolation, quarantine, social distancing and community containment: Pivotal role for old-style public health measures in the novel coronavirus (2019-nCoV) outbreak. J Travel Med. 2020; 27:1–4.
  6. Andersen M. Early Evidence on Social Distancing in Response to COVID-19 in the United States. SSRN Electron J. Epub ahead of print 2020. DOI: 10.2139/ssrn.3569368.
  7. Briscese G, Lacetera N, Macis M, Tonin M. Compliance with COVID-19 social-distancing measures in Italy: the role of expectation and duration. NBER Working Paper No. 26916. Available from:
  8. Keputusan Presiden (Keppres) Nomor 11 Tahun 2020 tentang Penetapan Kedaruratan Kesehatan Masyarakat Covid-19; 2020. p.1–2.
  9. Undang-Undang Republik Indonesia Nomor 6 Tahaun 2018 tentang Kekarantinaan Kesehatan; 2018. p.1-72.
  10. Peraturan Menteri Kesehatan Republik Indonesia Nomor 9 Tahun 2020 tentang Pedoman Pembatasan Sosial Berskala Besar Dalam Rangka Percepatan Penanganan Corona Virus Disease 2019 (Covid-19); 2020. p.1-28.
  11. Hellewell J, Abbott S, Gimma A, Bosse NI, Jarvis CI, Russell TW et al. Feasibility of controlling COVID-19 outbreaks by isolation of cases and contacts. Lancet Glob Heal. 2020; 8:e488–96.
  12. Remuzzi A, Remuzzi G. COVID-19 and Italy: what next? Lancet. 2020; 395: 1225–8.
  13. Nussbaumer-Streit B, Mayr V, Dobrescu AI, Chapman A, Persad E, Klerings I et al. measures to control COVID-19 : a rapid review. Cochrane Database of Systematic Reviews 2020. Epub ahead of print 2020. DOI: 10.1002/14651858.CD013574. Science. 2020; 367:1061-2.
  14. Kupferschmidt K, Cohen J. Can China’s COVID-19 strategy work elsewhere? In Depth. 2020; 367:1061-2.
  15. DiGiovanni C, Conley J, Chiu D, Zaborski J. Factors influencing compliance with quarantine in Toronto during the 2003 SARS outbreak. Biosecur Bioterror. 2004; 2:265–72.
  16. Webster RK, Brooks SK, Smith LE, Woodland L, Wessely S, Rubin GJ. How to improve adherence with quarantine: rapid review of the evidence. Public Health. 2020; 182:163–9.
  17. Worldometer. Coronavirus (COVID-19) Mortality Rate. 2020. Available from:
  18. Worldometer. Coronavirus Worldwide Graphs. 2020. Available from:
  19. Sun Q, Qiu H, Huang M, Yang Y. Lower mortality of COVID ? 19 by early recognition and intervention : experience from Jiangsu Province (Letter to the Editor). Ann Intensive Care 2020; 2–5.
  20. Pernyataan Lengkap Pemerintah Soal 25.216 kasus positif corona di RI 29 Mei. 2020. Available from:
  21. Pemerintah tambah 18 alat uji PCR, siap tes 10 ribu sampel per hari. 2020. Available from:
  22. Tiga tambahan alat uji COVID-19 dari China siap didistribusikan. 2020. Available from:

How to Cite

Saputri, R. I., & Setiawan, W. E. (2021). The trend analysis of COVID-19 cases before and after the Large-Scale Social Restriction (PSBB) in four provinces in Indonesia. Bali Medical Journal, 10(2), 946–951.




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Rosalina Intan Saputri
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Winardi Emmanuel Setiawan
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