Table 1.
Patient demographic and clinical information
| Characteristic | Canada (n = 10) | Sweden (n = 11) | Total (n = 21) |
|---|---|---|---|
| Gender, n | |||
| Male | 5 | 7 | 12 |
| Female | 5 | 4 | 9 |
| Age (years) | |||
| Mean | 46.7 | 43.7 | 45 |
| Range | 29–65 | 11–67 | 11–67 |
| Race, n | |||
| Caucasian | 10 | 11 | 21 |
| Living status, n | |||
| Lives alone | 1 | 0 | 1 |
| Lives with husband/wife/partner | 8 | 6 | 14 |
| Lives with children | 3 | 2 | 5 |
| Lives with parents/other family members (note: more than one option can be selected) | 1 | 2 | 3 |
| Work status, n | |||
| Working full time | 5 | 3 | 8 |
| Working part time | 0 | 1 | 1 |
| Full time homemaker | 0 | 2 | 2 |
| Student | 0 | 2 | 2 |
| Not working due to RLBP1 RP | 4 | 1 | 5 |
| Retired (note: one participant was a child) | 1 | 1 | 2 |
| Years between initial RLBP1 RP symptoms and diagnosis | |||
| Mean (range) | 20.9 years (2–62) | 7.7 years (1–27) | 14 years (1–62) |
| Median | 18 years | 5 years | 13 years |
| Weighted visual acuitya | |||
| Mean (range) | 15.6 letters (0–54) | 35.6 letters (1–88) | 26 letters (0–88) |
| Weighted visual field indexa | |||
| Mean (range) | 17.9% (22–79) | 38.3% (0–97) | 29.6% (0–97) |
aVisual function scores for left and right eyes were summarized into a single weighted average where the better eye is weighted 0.75 and the worse eye 0.25