Table 1 Summary of the available data. The average time since the first visit is shown. The count is the number of completed questionnaires at that visit
From: Validation of a vision-related activity scale for patients with retinitis pigmentosa
Study | Visit | Months | Count |
|---|---|---|---|
CERA | 1 | 0 | 22 |
Derby | 1 | 0 | 105 |
MEEI | 1 | 0 | 426 |
MEEI | 2 | 1.5 | 197 |
MEEI | 3 | 14 | 218 |
MEEI | 4 | 26 | 216 |
MEEI | 5 | 38 | 215 |
MEEI | 6 | 50 | 209 |
MEEI | 7 | 61 | 95 |
SERI | 1 | 0 | 14 |
SERI | 2 | 7 | 9 |
VASNC | 1 | 0 | 27 |
| Â | Â | Total forms | 1753 |