Skip to main content
. Author manuscript; available in PMC: 2020 Aug 1.
Published in final edited form as: Ophthalmology. 2019 Feb 18;126(8):1076–1083. doi: 10.1016/j.ophtha.2019.02.011

Table 3.

Comparison of Mean ECD between the SMAS5 and the CPTS

Late Endothelial Graft Failures Non-Failures
ECD, cells/mm2
(mean ± SD)		 SMAS (N=17) CPTS (N=14) P a SMAS (N=483) CPTS (N=1209) Pa
Preoperative 2671 ± 272 2703 ± 528 0.83 2684 ± 311 2759 ± 383 <0.001
6 Monthsb 1733 ± 801 1274 ± 888 0.27 2439 ± 575 2058 ± 581 <0.001
12 Monthsc 1500 ± 689 1219±612 0.48 2221 ±631 2003 ± 599 <0.001
a

Two sample t-test assuming equal variances

b

Includes 9 eyes in the SMAS and 9 eyes in the CPTS that failed. Among non-failures, includes 266 eyes from the SMAS and 987 eyes from the CPTS.

c

Includes 12 eyes in the SMAS and 4 eyes in the CPTS that failed. Among non-failures, includes 330 eyes from the SMAS and 931 eyes from the CPTS.

ECD = endothelial cell density; SMAS = Specular Microscopy Ancillary Study; CPTS = Cornea Preservation Time Study