Table 1.
Baseline clinical characteristics of primary retinal detachment patients determined by COVID-19 status
| Total | Pre-COVID-19 Group 1 |
During-COVID-19 Group 2 |
p | |
|---|---|---|---|---|
| Total | 1310 | 1003 | 307 | |
| Age (years) | 58 (50 to 67) | 58 (49 to 67) | 59 (50 to 69) | 0.150 |
| Gender (% male) | 831 (63.4%) | 639 (63.7%) | 192 (62.5%) | 0.735 |
| Deprivation rankb | ||||
| Most deprived (IMD-A) | 712 (55.2%) | 546 (55.0%) | 166 (55.7%) | 0.894 |
| Least deprived (IMD-B) | 578 (44.8%) | 446 (45.0%) | 132 (44.3%) | |
| Laterality (% right) | 696 (53.1%) | 536 (53.4%) | 160 (52.1%) | 0.695 |
| High myopia (% yes) | 95 (7.3%) | 69 (6.9%) | 26 (8.5%) | 0.378 |
| RD characteristic | ||||
| Macula-on | 630 (50.2%) | 469 (49.2%) | 161 (53.3%) | 0.235 |
| Trauma related | 14 (1.1%) | 10 (1.0%) | 4 (1.3%) | 0.750 |
| Any PVR | 106 (8.1%) | 82 (8.2%) | 24 (7.8%) | 0.905 |
| PVR C | 55 (4.2%) | 44 (4.4%) | 11 (3.6%) | 0.627 |
| Surgery type | ||||
| PPV | 1141 (87.1%) | 866 (86.3%) | 275 (89.6%) | 0.146 |
| Scleral buckle | 142 (10.8%) | 114 (11.4%) | 28 (9.1%) | 0.295 |
| Combined | 27 (2.1%) | 23 (2.3%) | 4 (1.3%) | 0.363 |
| Tamponade choicea | ||||
| SF6 | 338 (28.9%) | 286 (32.2%) | 52 (18.6%) | < 0.001 |
| C2F6 | 346 (29.6%) | 246 (27.7%) | 100 (35.8%) | 0.008 |
| C3F8 | 262 (22.4%) | 183 (20.6%) | 79 (28.3%) | 0.007 |
| Silicone oil | 148 (12.7%) | 123 (13.8%) | 25 (9.0%) | 0.050 |
| Heavy silicone oil | 59 (5.1%) | 38 (4.3%) | 21 (7.5%) | 0.028 |
| Pre-op VA (LogMAR) | 0.48 (0.18 to 1.48) | 0.48 (0.18 to 1.78) | 0.48 (0.18 to 1.48) | 0.625 |
Age and VA are reported as median (interquartile range). The Mann–Whitney U test was used to compare continuous variables between groups. Fisher’s exact test was used to compare nominal groups
Statistical significance in bold
RD retinal detachment, VA visual acuity, PVR proliferative vitreoretinopathy
aPPV cases only, unknown tamponade in 15 patients (13 and 2 from each group, respectively)
bIndices of multiple deprivation not available in 20 patients