Description of Surveys
| . | NSHA . | CEPGRS . |
|---|---|---|
| Field dates | July 11 to August 30, 2018 | June 29 to July 22, 2020 |
| Number of questions* | 34 | 30 or 37 |
| Average survey length | 19 minutes | 9 or 13 minutes |
| Number invited | 2,858 | 2,308 |
| Number responded | 2,479 | 1,854 |
| Participation rate | 86.7% | 80.3% |
| . | NSHA . | CEPGRS . |
|---|---|---|
| Field dates | July 11 to August 30, 2018 | June 29 to July 22, 2020 |
| Number of questions* | 34 | 30 or 37 |
| Average survey length | 19 minutes | 9 or 13 minutes |
| Number invited | 2,858 | 2,308 |
| Number responded | 2,479 | 1,854 |
| Participation rate | 86.7% | 80.3% |
Many questions include tables with multiple subquestions or subparts.