Supplementary Table I (online only).
Multimodal survey dissemination, potential audience, and estimated response rate
| Organization | Date of dissemination | Potential audience |
|---|---|---|
| Society for Vascular Surgery and affiliated organizations | ||
| Society for Vascular Surgery e-mail lista | April 14, 2020 | 3528 |
| Association of Program Directors in Vascular Surgery e-mail list | April 15, 2020 | 223 |
| Current number of U.S. vascular surgery traineesb | 638 | |
| SVS Connect | April 17, 2020 | 1203 |
| Vascular Specialist Magazinec | April 16, 2020 | 399 |
| Other outreach platforms | ||
| Vascular Surgeons COVID-19 WhatsApp | April 14, 2020 | 256 |
| Vascular Low Frequency Disease Consortium mailing | April 15, 2020 | 30 |
| Brazilian Society of Angiology and Vascular Surgery | April 15, 2020 | 3500 |
| Veterans Affairs vascular surgeons | April 15, 2020 | 97 |
| Social media outreach | ||
| Vascular SVS: @VascularSVS | April 16, 2020 | 5913 |
| Vascular Specialist Online: @VascularOnline | April 16, 2020 | 351 |
| Audible bleeding: @Audiblebleeding | April 16, 2020 | 985 |
| CanadianSVS Twitter: @CanadianSVS | April 18, 2020 | 684 |
| GermanVasc: @VASCevidence | April 18, 2020 | 440 |
COVID-19, Coronavirus disease 2019; SVS, Society for Vascular Surgery.
On April 14, 2020, e-mail letters were sent to 3528 recipients; 3525 were received (3 bounced). Of those received, 1866 were opened (52.9%), and 381 had accessed the survey directly from the e-mail link. On April 23, 2020, a reminder e-mail was sent to the same list. Of these, 1263 were opened (35.8%), and 134 accessed the survey directly from the e-mail, suggesting that 515 respondents had been reached via the SVS e-mail list, and accounting for ∼16.5% if all e-mail letters opened.
The current number of vascular surgery trainees in the United States is 638; therefore, the response rate was 23% (145 of 638).