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Table 4 Difference between automated and semi-automated mean area calculations

From: Reproducibility of Corneal Graft Thickness measurements with COLGATE in patients who have undergone DSAEK (Descemet Stripping Automated Endothelial Keratoplasty)

     Bias (95% CI)
  Mean area (um2) ±SD P value R value LoA Mean Upper limit Lower limit
Automated 195474.6 ± 96311.3 0.006 −0.062 43187.1 (13056.0 to 73318.3) 250990.3 (199150.8 to 302830.0) −164616.1 (-216455.7 to -112776.5)
S.A M(mean of M1, M2) 152287.4 ± 38750.8
Automated 195474.6 ± 96311.3 0.004 −0.058 45885.2 (15590.3 to 76180.1) 254817.6 (202696.4 to 306938.9) −163047.2 (-215168.5 to -110926.0)
S.A B(mean of B1 ,B2) 149589.4 ± 40447.4