Table 2. Vision Function and Choroidal Thickness at the 12-Month Follow-up (Intention-to-Treat Analysis).
| Outcome | Students, % (No./total No.) | Absolute efficacy, % (95% CI) | P valueb | |
|---|---|---|---|---|
| Interventiona | Control | |||
| Change in UCVA | ||||
| 2 Lines worsening | 17.5 (22/126) | 32.0 (39/122) | 14.5 (3.9 to 25.1) | .02 |
| Within 1 line | 77.0 (97/126) | 65.6 (80/122) | 11.4 (0.2 to 22.6) | |
| 2 Lines improvement | 5.6 (7/126) | 2.5 (3/122) | 3.1 (1.8 to 8.0) | |
| BCVA <0.8 | 0 (0/123) | 0.8 (1/122) | 0.8 (−0.7 to 2.3) | .50 |
| CT change, mean (SD), μm | 3.0 (16.9) | −9.2 (22.3) | 12.3 (7.3 to 17.2) | <.001 |
Abbreviations: BCVA, best corrected visual acuity; CT, choroidal thickness; UCVA, uncorrected visual acuity.
a
The intervention group included those who continued the intervention and those with interrupted intervention.
b
The t test was used for CT change, and the χ2 test was used for change of UCVA and BCVA.