Table 3

Correlation and linear regression statistical analysis of the comparison between Keeler Letter acuity and Kay Picture acuity tests

Amblyopic eye VA results comparisonFellow eye VA results comparison
Pearson's r correlation (95% CI)0.94 (0.90–0.97)0.88 (0.80–0.93)
Regression analysisF(1,56)=444.7, p<0.00001F(1,56)=189.3, p<0.00001
Correlation coefficient (slope of linear regression)0.980.86
95% CI0.89 to 1.080.741 to 0.994
  • VA, visual acuity.