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. Author manuscript; available in PMC: 2020 Dec 1.
Published in final edited form as: Am J Ophthalmol. 2019 May 10;208:166–177. doi: 10.1016/j.ajo.2019.04.020

Table 2.

Quadratic regression characteristics for the four cluster patterns described in Figure 2.

R2 Vertex
point		 Slope of linear regression
after vertex point (μm/year)
Pattern 1 (6 Clusters)
  Cluster 1 0.81 38.19 0.13
  Cluster 2 0.94 38.19 0.13
  Cluster 3 0.94 38.19 0.13
  Cluster 4 0.86 38.19 0.13
  Cluster 5 0.92 38.66 0.07
  Cluster 6 0.74 36.22 0.04
  Mean 0.87 37.94 0.10
Pattern 2 (6 Clusters)
  Cluster 1 0.81 38.19 0.13
  Cluster 2 0.94 38.19 0.13
  Cluster 3 0.94 38.19 0.13
  Cluster 4 0.86 38.19 0.13
  Cluster 5 0.92 37.75 0.07
  Cluster 6 0.80 38.27 0.04
  Mean 0.88 38.13 0.11
Pattern 3 (7 Clusters)
  Cluster 1 0.81 38.23 0.13
  Cluster 2 0.94 38.23 0.13
  Cluster 3 0.92 38.23 0.13
  Cluster 4 0.88 38.23 0.13
  Cluster 5 0.93 38.30 0.07
  Cluster 6 0.91 38.30 0.07
  Cluster 7 0.74 36.22 0.04
  Mean 0.87 37.96 0.10
Pattern 4 (7 Clusters)
  Cluster 1 0.81 38.23 0.13
  Cluster 2 0.94 38.23 0.13
  Cluster 3 0.92 38.23 0.13
  Cluster 4 0.88 38.23 0.13
  Cluster 5 0.93 38.19 0.08
  Cluster 6 0.93 38.19 0.08
  Cluster 7 0.79 36.93 0.04
  Mean 0.88 38.03 0.10

R2, coefficient of determination, μm, microns