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Table 4 Characteristics of the stable and unstable subgroups in combined group at 12 and 24 months postoperatively

From: Long-term outcomes of prediction error after combined phacoemulsification and trabeculectomy in glaucoma patients

Variables 12 months postoperatively 24 months postoperatively
Stable subgroup
(n=30)
Unstable subgroup
(n=30)
P value Stable subgroup
(n=20)
Unstable subgroup
(n=27)
P value
Age (years) 62.47 ± 10.68 68.83 ± 10.58 0.024 a 62.40 ± 11.77 66.40 ± 10.55 0.222 c
Sex (male/female) 17 / 13 17 / 13 1.000 b 12 / 8 16 / 11 0.599 b
Type of glaucoma (ACG/OAG) 17 / 13 17 / 13 1.000 b 9 / 11 17 / 10 0.177 b
Baseline BCVA (LogMAR) 0.61 ± 0.82 0.74 ± 0.82 0.530 a 0.87 ± 1.05 0.44 ± 0.39 0.197 c
Postoperative BCVA (LogMAR) 0.40 ± 0.76 0.57 ± 0.95 0.449 a 0.59 ± 10.7 0.36 ± 0.60 0.334 c
Baseline IOP (mmHg) 31.87 ± 10.50 27.33 ± 9.18 0.080 a 30.15 ± 9.23 29.37 ± 10.01 0.384 c
Postoperative IOP (mmHg) 13.50 ± 2.67 13.20 ± 3.57 0.714 a 13.75 ± 2.86 13.48 ± 3.41 0.312 c
AL (mm) 23.11 ± 0.89 23.20 ± 1.19 0.735 a 23.20 ± 0.94 23.22 ± 1.16 0.249 c
ACD (mm) 2.23 ± 0.47 2.27 ± 0.50 0.492 a 2.28 ± 0.46 2.08 ± 0.41 0.040 c
LV (mm) 0.74 ± 0.31 0.89 ± 0.27 0.038 a 0.70 ± 0.35 0.94 ± 0.21 0.010 c
AV (mm) 2.96 ± 0.27 3.17 ± 0.47 0.041 a 2.99 ± 0.26 3.02 ± 0.45 0.418 c
  1. ACG angle closure glaucoma, OAG open angle glaucoma, BCVA best-corrected visual acuity, LogMAR logarithm of the minimum angle of resolution, IOP, intraocular pressure, AL axial length, ACD anterior chamber depth, LV lens vault, AV anterior vault
  2. aIndependent t-test for stable subgroup and unstable subgroup
  3. bChi-square test for stable subgroup and unstable subgroup
  4. cMann-Whitney U test for stable subgroup and unstable subgroup
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