Table 1.
Basic characteristics of study population
| Patient and ophthalmic surgery related characteristics | VITRET, CKD92 group (n = 1,564), n (%) | PHACOVIT, CKD94 group (n = 126), n (%) | P-value |
|---|---|---|---|
| Sex | 0.16 | ||
| Male | 1,034 (66.1) | 75 (59.5) | |
| Female | 530 (33.9) | 51 (40.5) | |
| Age of the patient (years) | 0.004 | ||
| <40 | 56 (3.6) | 6 (4.8) | |
| 40–<50 | 147 (9.4) | 7 (5.5) | |
| 50–<60 | 482 (30.8) | 23 (18.3) | |
| ≥60 | 879 (56.2) | 90 (71.4) | |
| Year of surgery | 0.07 | ||
| Before 2011 | 696 (44.5) | 45 (35.7) | |
| 2011 or later | 868 (55.5) | 81 (64.3) | |
| Statin therapy | 0.66 | ||
| No | 1,273 (81.4) | 100 (79.4) | |
| Yes | 291 (18.6) | 26 (20.6) | |
| Insulin use | 0.99 | ||
| No | 1,520 (97.2) | 122 (96.8) | |
| Yes | 44 (2.8) | 4 (3.2) | |
| OAD use | 0.99 | ||
| No | 1,451 (92.8) | 117 (92.9) | |
| Yes | 113 (7.2) | 9 (7.1) | |
| Antithrombotics | 0.10 | ||
| No | 1,478 (94.5) | 114 (90.5) | |
| Yes | 86 (5.5) | 12 (9.5) | |
| Beta-blockers | 0.82 | ||
| No | 1,334 (85.3) | 106 (84.1) | |
| Yes | 230 (14.7) | 20 (15.9) | |
| Duration of operation (h) | <0.0001 | ||
| (0.3, <1.13) | 584 (37.3) | 19 (15.1) | |
| (1.13, <1.5) | 573 (36.6) | 44 (34.9) | |
| (1.5, 6.38) | 407 (26.0) | 63 (50.0) |
Notes: P-value based on the chi-square test for independence. P ≤ 0.05 was considered as statistically significant. VITRET, CKD92, combined vitrectomy and retinal procedure; PHACOVIT, CKD94, combined phacoemulsification and IOL implantation together with PPV.
Abbreviations: OAD, oral antidiabetic drugs; IOL, intraocular lens; PPV, pars plana vitrectomy.