Group | Mean utility | SD | 95% CI | p Value | p Value |
NLP | 0.26 | 0.08 | 0.19–0.33 | NA | 0.007 |
LP-CF | 0.47 | 0.29 | 0.33–0.61 | 0.007 | NA |
20/200–20/400 | 0.65 | 0.21 | 0.58–0.72 | 0.6 × 10−12 | 0.03 |
NLP = no light perception in each eye; LP-CF = light perception to counting fingers in the better eye; 20/200–20/400 = 20/200 to 20/400 in the better eye;
↵using the heteroscedastic Student'st test compared with the NLP group;
↵using the heteroscedastic Student's t test compared with the light perception to counting fingers group; NA = not applicable.