Supplementary Table 1.

Survey Form Used for Collection of Data for the Study

Record ID ____________________________________ Baseline 1.In what city is your endoscopy unit located? (Zipcode) ______________________ 2.PRIOR to COVID-19, how many endoscopic procedures was your center performing in the last year? ____________________________________ 3.Of these, how many were upper endoscopic procedures (EGD/ERCP/EUS)? ____________________________________ 4.How many endoscopists do you have on your unit? ____________________________________ 5.How many nurses do you have on your endoscopy unit? ____________________________________ 6.How many technicians do you have in your endoscopy unit? ____________________________________ Outpatient Endoscopy testing 7. Do you currently test your patients for COVID-19 before endoscopy? a. Yes b. No c. Sometimes 8. If yes, when did you start testing? a. May 2020 b. June 2020 c. July 2020 d. August 2020 9. What type of testing is used? a. PCR based (nasopharynx, nares, oropharynx) b. Antibody based 10.If you are testing pre-outpatient procedure, approximately ____ patients have been tested and approximately ____ patients have tested positive. 11. Do you call your patients 7-14 days post-outpatient endoscopic procedure for a routine check? a. Yes b. No c. Sometimes 12.If Yes, how many of the patients called have been symptoms suggestive of COVID-19? ____________________________________ 13. Do you screen/test your endoscopy personnel for COVID-19? a. Symptom screen only b. Test if symptomatic c. Test everyone d. Neither test nor screen 14.Since the start of the pandemic, how many of your endoscopy personnel have tested positive for COVID-19? ____________________________________ 15.How many of them have been hospitalized? ____________________________________ Impact on Endoscopy volumes 16. At the peak of the pandemic (compared to Pre-COVID-19), what percentage reduction in ALL endoscopy procedure volumes were noted? a. No reduction compared to pre-COVID-19 b. Reduced by ___%

17. Currently (compared to Pre-COVID-19), what percentage reduction in ALL endoscopic procedure volumes are you noticing? a. No reduction compared to pre-COVID-19 b. Reduced by ___% 18. At the peak of the pandemic (compared to Pre-COVID-19), what percentage reduction in FELLOW/TRAINEE procedure volumes were noted? a. We do not have any trainees/fellows b. No reduction compared to pre-COVID-19 c. Reduced by ___% 19. Currently (compared to Pre-COVID-19), what percentage reduction in FELLOW/TRAINEE procedure volumes are you noticing? a. We do not have any trainee/fellows b. No reduction compared to pre-COVID-19 c. Reduced by ___% Barriers and Current PPE practices 20. What are some of the barriers you have encountered in resuming outpatient endoscopy? (check all that apply) a. Limited COVID-19 testing b. Limited PPE c. Limited endoscopy staff d. Safety concerns e. Institutional policy f. No barriers 21. In which situation do you use N95/PAPRs? (check all that apply) a. All endoscopic procedures b. Upper endoscopic procedures only c. Lower endoscopic procedures only d. Only COVID-19 positive patients e. If patient not tested for COVID-19 f. Never

EGD, esophagogastroduodenoscopy; ERCP, endoscopic retrograde cholangiopancreatography; PAPR, powered air purifying respirators; PCR, polymerase chain reaction.