Table 4

Multivariate regression between Graft Arc Length and Trephine diameter
Independent variables in regression model B coefficient* (95%CI) P value Adjusted R2
Recipent age, sex, posterior cornea arc length 1.112 (0.935, 1.289) <0.001 0.677
Recipent age, sex, posterior cornea arc length, AC width 1.134 (0.958, 1.310) <0.001 0.686
Recipent age, sex, posterior cornea arc length, AC width, thickness 1.134 (0.955, 1.312) <0.001 0.683
Recipent age, sex, Cornea posterior curvature 1.162 (0.999, 1.324) <0.001 0.682
Cornea Posterior curvature 1.154 (0.998, 1.310) <0.001 0.685
AC width 1.117 (0.959, 1.276) <0.001 0.691
Recipent age, sex, Cornea posterior curvature, posterior cornea arc length, AC width 1.122 (0.951, 1.292) <0.001 0.694
Cornea Posterior curvature, AC width** 1.112 (0.954, 1.269) <0.001 0.697

*B coefficient for trephine diameter.

**Final model using backward selection.

All variables in the models were tested for colinearity with acceptable tolerence.

Tan et al.

Tan et al. BMC Medical Imaging 2012 12:19   doi:10.1186/1471-2342-12-19

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