Table 3. Regression coefficients (P-value) of the multiple linear regression analysis.

			Independent variable				P*
	Dependent	Intercept	CCT	CC	CA	(GAT+iCare)/2
	variable		(μm)	(diopters)	(diopters)	(mm Hg)
Control group	GAT IOP	−2.2	0.041 (0.01)	0.06 (0.85)	−0.19 (0.76)	n.a.	0.047
(n=101)	iCare IOP	20.6	0.050 (0.0001)	−0.76 (0.008)	−0.23 (0.68)	n.a.	0.0001
	GAT–iCare	−24.3	−0.016 (0.10)	0.76 (0.0001)	0.072 (0.85)	0.17 (0.015)	0.001
PK group	GAT IOP	22.2	0.012 (0.50)	0.20 (0.56)	0.03 (0.92)	n.a.	0.82
(n=34)	iCare IOP	44.9	0.009 (0.62)	−0.77 (0.031)	−0.06 (0.81)	n.a.	0.15
	GAT–iCare	−22.1	0.003 (0.80)	0.56 (0.023)	0.085 (0.61)	−0.02 (0.88)	0.17
ALTK group	GAT IOP	−28.5	−0.003 (0.87)	0.22 (0.57)	−0.6 (0.10)	n.a.	0.55
(n=20)	iCare IOP	7.8	−0.030 (0.11)	0.12 (0.72)	−0.50 (0.11)	n.a.	0.62
	GAT–iCare	−34.1	0.030 (0.06)	0.10 (0.62)	−0.02 (0.94)	0.20 (0.29)	0.11
DSAEK group	GAT IOP	10.7	−0.009 (0.55)	0.26 (0.59)	0.34 (0.35)	n.a.	0.37
(n=19)	iCare IOP	−6.0	-0.018 (0.38)	0.19 (0.76)	−0.20 (0.86)	n.a.	0.85
	GAT–iCare	17.4	0.010 (0.11)	0.13 (0.68)	0.13 (0.37)	−0.29 (0.10)	0.19
Edematous grafts	GAT IOP	3.7	−0.017 (0.16)	0.41 (0.60)	0.56 (0.44)	n.a.	0.66
Group (n=17)	iCare IOP	16.0	−0.035 (0.16)	0.26 (0.57)	−0.13 (0.87)	n.a.	0.52
	GAT–iCare	−10.6	0.013 (0.34)	0.15 (0.73)	0.73 (0.13)	−0.16 (0.49)	0.37

Abbreviations: ALTK, automated-lamellar-therapeutic keratoplasty; CA, corneal astigmatism; CC, corneal curvature; CCT, central corneal thickness; DSAEK, Descemet-stripping-automated-endothelial keratoplasty; PK, penetrating keratoplasty; n.a., not applicable. ^*significance value of the model in explaining the variation of the dependent variable. Statistically significant values are indicated in bold.