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Br J Ophthalmol 82:376-381 doi:10.1136/bjo.82.4.376
  • Original Article
    • Clinical science

Epithelial permeability reflects subclinical effects of contact lens wear

Table 2

Variance components estimated using a mixed effects model and their standard errors

Source of variation Variance component estimate Standard error
Between subject variance
 average ln(Pdc) 0.1557 0.0805
 treatment effect 0.1094 0.1435
Within subject variance 0.2208 0.0895

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