Table 1. Baseline clinical and demographic characteristics of the study population.
| Variable | Overall (n=80) | XEN (n=40) | XEN+PHACO (n=40) | Pa |
| Age, y | 0.3780 | |||
| Mean (SD) | 74.0 (10.4) | 74.8 (10.3) | 73.2 (10.5) | |
| 95%CI | 71.7 to 76.3 | 71.5 to 78.0 | 69.9 to 76.6 | |
| Sex | 1.0000 | |||
| Male | 42 (52.5) | 21 (52.5) | 21 (52.5) | |
| Female | 38 (47.5%) | 19 (47.5) | 19 (47.5%) | |
| Myopia, n (%)c | 0.0333b | |||
| No | 62 (77.5) | 27 (67.5) | 35 (87.5) | |
| Yes | 18 (22.5) | 13 (32.5) | 5 (12.5) | |
| Previous surgery, n (%) | <0.0001b | |||
| No | 49 (61.2) | 15 (37.5) | 34 (85.0) | |
| Yes | 31 (38.7) | 25 (62.5) | 6 (15.0) | |
| Implant location, n (%) | 0.0005b | |||
| Superior | 58 (72.5) | 22 (55.0) | 36 (90.0) | |
| Inferior | 22 (27.5) | 18 (45.0) | 4 (10.0) | |
| IOP, mm Hg | 0.0814 | |||
| Mean (SD) | 21.0 (5.2) | 21.8 (5.3) | 20.1 (5.1) | |
| 95%CI | 19.8 to 22.1 | 20.1 to 23.5 | 18.5 to 21.7 | |
| NOAGM, n (%) | 0.1014b | |||
| 1 | 3 (3.7) | 1 (2.5) | 2 (5.0) | |
| 2 | 15 (18.8) | 6 (15.0) | 9 (22.5) | |
| 3 | 56 (70.0) | 28 (70.0) | 28 (70.0) | |
| 4d | 6 (7.5) | 5 (12.5) | 1 (2.5) | |
n: Number of eyes; SD: Standard deviation; CI: Confidence interval; IOP: Intraocular pressure; NOAGM: Number of antiglaucoma medication. aMann-Whitney U test; bChi-squared test with the Cochran-Armitage test; cThe eyes with a myopia with ≥6 diopters were considered as myopic eyes; dThree topical hypotensive medications + systemic carbonic anhydrase inhibitor. Statistical significance (P value) was calculated between XEN alone and combined surgery (XEN+Phacoemulsification, XEN+PHACO).