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. 2018 Apr 30;12:791–797. doi: 10.2147/OPTH.S158403

Table 2.

Mean intraocular pressure values at each time point for both treatment groups (mmHg)

Time point Phaco-goniotomy with KDB
Phaco-iStent
P-value (difference in % change from baseline between groups)
N Mean (SD) Change from baseline (mean difference in % change) P-value (change from baseline) N Mean (SD) Change from baseline (mean difference in % change) P-value (change from baseline)
Baseline 237 17.9 (4.4) Reference 198 16.7 (4.4) Reference
Day 1 229 15.4 (5.6) −2.5 (−13.9) <0.001 193 16.0 (5.6) −0.7 (−4.3) 0.495 <0.001
Week 1 211 15.6 (5.5) −2.3 (−12.7) <0.001 163 16.5 (5.5) −0.2 (−0.9) 0.999 <0.001
Month 1 223 14.0 (3.6) −3.8 (−21.3) <0.001 163 14.9 (3.5) −1.8 (−10.6) <0.001 <0.001
Month 3 203 13.6 (2.7) −4.3 (−24.0) <0.001 128 14.2 (2.6) −2.5 (−15.0) <0.001 <0.001
Month 6 237 13.6 (2.7) −4.2 (−23.7) <0.001 198 13.9 (2.7) −2.7 (−16.4) <0.001 <0.001

Notes: Adjusted P-values for Bonferroni corrections. “–“ indicates no change from baseline.

Abbreviations: KDB, Kahook Dual Blade; phaco, phacoemulsification; SD, standard deviation.