Update status of continuous living systematic review studies
| Rank | Title | n | Update frequency | Journal | Registration scheme |
| 1 | Risks and Impact of Angiotensin-Converting Enzyme Inhibitors or Angiotensin-Receptor Blockers on SARS-CoV-2 Infection in Adults | 9 | 8 | Ann Intern Med | PROSPERO |
| 2 | Interventions for increasing fruit and vegetable consumption in children aged five years and under | 7 | 5 | Cochrane Database Syst Rev | Cochrane Database Syst Rev* |
| 3 | Rehabilitation and COVID-19: the Cochrane Rehabilitation 2020 rapid living systematic review | 7 | 6 | Eur J Phys Rehabil Med | PROSPERO |
| 4 | Electronic cigarettes for smoking cessation | 6 | 3 | Cochrane Database Syst Rev | Cochrane Database Syst Rev* |
| 5 | Convalescent plasma or hyperimmune immunoglobulin for people with COVID-19: a living systematic review | 5 | 4 | Cochrane Database Syst Rev | Centre for Open Science |
| 6 | A living WHO guideline on drugs for covid-19 | 5 | 4 | BMJ | – |
| 7 | Hydroxychloroquine or Chloroquine for Treatment or Prophylaxis of COVID-19: A Living Systematic Review | 4 | 3 | Ann Intern Med | – |
| 8 | Systemic pharmacological treatments for chronic plaque psoriasis: a network meta‐analysis | 4 | 2 | Cochrane Database Syst Rev | Cochrane Database Syst Rev* |
| 9 | Thoracic imaging tests for the diagnosis of COVID‐19 | 4 | 3 | Cochrane Database Syst Rev | Cochrane Database Syst Rev |
| 10 | Drug treatments for covid-19: living systematic review and network meta-analysis | 4 | 3 | BMJ | – |
*Subsequent studies have shown changes in research plans that are inconsistent with the initial registration scheme.