Skip to main content

Table 2 Intraclass correlation coefficient (ICC) results

From: Intraocular pressure after myopic laser refractive surgery measured with a new Goldmann convex prism: correlations with GAT and ORA

  Tonometer pair N ICC (95% CI) P
All patients GAT3M - GATpre 30 0.400 (− 0.227–0.741) < 0.001
GAT12M - GATpre 30 0.478 (− 0.113–0.758) < 0.006
CT 3 M - GATpre 30 0.669 (0.296–0.843) < 0.002
CT 12 M - GATpre 30 0.704 (0.383–0.859) < 0.001
IOPcc3M-
CT3M
30 0.450 (− 0.136–0.740) < 0.010
IOPcc12M -
CT12M
30 0.465 (− 0.196–0.764) < 0.003
LASIK GAT3M - GATpre 19 0.418 (−0.221–0.781) < 0.003
GAT12M - GATpre 19 0.516 (−0.171–0.811) < 0.015
CT 3 M - GATpre 19 0.808 (0.492–0.927) < 0.000
CT 12 M - GATpre 19 0.886 (0.703–0.956) < 0.000
IOPcc3M-
CT3M
19 0.405 (−0.252–0.748) < 0.076
IOPcc12M-
CT12M
19 0.568 (−0.185–0.843) < 0.004
PRK GAT3M - GATpre 11 0.134 (−0.234–0.590) < 0.261
GAT12M - GATpre 11 0.262 (0.581–0.752) < 0.251
CT 3 M - GATpre 11 −0.196 (−1.817–0.619) < 0.638
CT 12 M - GATpre 11 −0.266 (−3.896–0.663) < 0.642
IOPcc3M-
CT3M
11 0.272 (− 0.328–0.729) < 0.116
IOPcc12M-
CT12M
11 0.256 (− 0.332–0.719) < 0.182
  1. ICC is based on absolute agreement. Significant differences are marked in bold. CI, confidence Interval; p, value for correlation
  2. GAT Goldmann applanation tonometer, CT Convex tonometer, IOPg Goldmann-correlated IOP, IOPcc Corneal-compensated IOP, M Months