Khanh Ngoc Cong DuongTien Nguyen Le BaoPhuong Thi Lan NguyenThanh Vo VanToi Phung LamAnh Pham GiaLuerat AnuratpanichBay Vo VanMinistry of Health VitenamHanoi Medical UniversityMahidol UniversityViet Duc HospitalThong Nhat Hospital2022-08-042022-08-042021-03-01JMIR Formative Research. Vol.5, No.3 (2021)2561326X2-s2.0-85103300103https://repository.li.mahidol.ac.th/handle/123456789/78366In "Psychological Impacts of COVID-19 During the First Nationwide Lockdown in Vietnam: Web-Based, Cross-Sectional Survey Study" (JMIR Form Res 2020;4(12):e24776) three errors were noted. In the originally published paper, the "greater than or equal to" symbol (≥) was missing in three places in tables due to an XML conversion error. The following corrections have been made: In Table 1, under "Age group (years) (reference: 18-39)," "60" has been corrected to "≥60". In Table 1, under "Household size (reference: 1 member)," "6" has been corrected to "≥6". In Table 2, under "Age group (years) (reference: 18-39)," "60" has been corrected to "≥60". The correction will appear in the online version of the paper on the JMIR Publications website on March 5, 2021, together with the publication of this correction notice. Because this was made after submission to PubMed, PubMed Central, and other full-text repositories, the corrected article has also been resubmitted to those repositories.Mahidol UniversityMedicineErratumSCOPUS10.2196/28357