Chapter 1 32 APPENDIX TO CHAPTER 1 Table 1. Abbreviated* STROBE checklist for cohort studies, applied to the RECoVERED Cohort Study STROBE Checklist Criterion Specific recommendation RECoVERED Cohort Study Background Rationale Explain the scientific background and rationale for the investigation being reported At the early stage of the pandemic, little was known about the clinical consequences of infection with SARS-CoV-2, a novel coronavirus Objectives State specific objectives, including any prespecified hypotheses To identify the viro-immunological, clinical and psychosocial sequelae of COVID-19 Methodology Study design Present key elements of study design early in the paper • Prospective enrolment of participants (within 7 days of diagnosis or hospital admission onwards) • A minority of participants with initially severe/critical COVID-19 were enrolled no later than 3 months after illness onset, to include individuals hospitalised during the ‘first wave’ of COVID-19 in the Netherlands (27 February to 1 June 2020) • Follow-up was initially defined at 12 months, and later extended to 24 months Setting Describe the setting, locations, and relevant dates, including periods of recruitment, exposure, follow-up, and data collection • Based in Amsterdam, the Netherlands • Study visits took place at the Public Health Service of Amsterdam (PHSA) and Amsterdam University Medical Centres (AUMC – location AMC) • Participants were enrolled from 11 May 2020 to 21 June 2021 • During the first month of follow-up, data collection took place: at the participants’ home (via home visits by trained study staff) or (for hospitalised participants) on the hospital ward • Subsequent visits took place at the study sites (PHSA or AMC), were biological sampling and outcome interviews took place (Figure 1.5) • Participants additionally completed monthly online surveys and a variety of psycho-social questionnaires at different time-points (Figure 1.5)
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