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. 2017 Dec 1;11(3):153–159. doi: 10.1016/j.optom.2017.10.002

Table 2.

Agreement between cover test and von Graefe method (CT–VG) for distance and near vision.

MD (Δ) p 95% CI (Δ) CA (Δ) 95% limits of agreement (Δ)
Distance vision
 Non-presbyopic +0.26 0.053 −0.003/+0.53 ±2.97 −2.71/+3.23
 Presbyopic +0.29 0.010* +0.07/+0.50 ±1.59 −1.30/+1.88



Near vision
 Non-presbyopic +0.47 0.124 −0.13/+1.08 ±6.74 −6.27/+7.21
 Presbyopic +0.22 0.084 −0.03/+0.48 ±1.86 −1.64/+2.08

MD, mean difference; CI, confidence interval for the mean difference; CA, coefficient of agreement.

*

Indicates a mean difference statistically different from zero.