Retinal detachment size, location, macular status, location of breaks, number of retinal breaks and lens status at time of surgery
| Total | PPV | PPV/SB | SB | P value* † | |
| n (%) or Median (range) | n (%) or Median (range) | n (%) or Median (range) | n (%) or Median (range) | ||
| Size (clock hours) | 4.8 (1–11) | 4.8 (1–10) | 5.6 (1.5–11) | 4.2 (2–6) | 0.007 |
| Hemisphere | |||||
| Superior | 385 (56.2%) | 348 (57.3%) | 19 (41.3%) | 18 (56.2%) | 0.313 |
| Inferior | 222 (32.4%) | 192 (31.7%) | 19 (41.3%) | 11 (34.4%) | |
| Equilateral | 78 (11.4%) | 67 (11.0%) | 8 (17.4%) | 3 (9.4%) | |
| Macula status | |||||
| On | 335 (44.6%) | 303 (45.4%) | 15 (29.4%) | 17 (53.1%) | 0.53 |
| Off | 416 (55.4%) | 365 (54.6%) | 36 (70.6%) | 15 (46.9%) | |
| Break location | |||||
| Inferior | 297 (39.5%) | 262 (39.2%) | 20 (39.2%) | 15 (46.9%) | 0.687 |
| Non-inferior | 454 (60.5%) | 406 (60.8%) | 31 (60.8%) | 17 (53.1%) | |
| Retinal breaks | |||||
| 1 | 293 (40.9%) | 263 (41.4%) | 19 (38.0%) | 11 (36.7%) | 0.124 |
| 2–4 | 208 (29.1%) | 189 (29.7%) | 15 (30.0%) | 4 (13.3%) | |
| >4 | 215 (30.0%) | 184 (28.9%) | 16 (32.0%) | 15 (50.0%) | |
| Lens status | |||||
| Phakic | 441 (59.9%) | 378 (57.8%) | 35 (68.6%) | 28 (90.3%) | 0.001 |
| Pseudophakic | 295 (40.1%) | 276 (42.2%) | 16 (31.4%) | 3 (9.7%) | |
*P values reflect the comparison between the three surgical groups (PPV, PPV/SB and SB).
†P values <0.05 obtained by ANOVA or χ2 test were considered statistically significant.
ANOVA, analysis of variance; PPV, pars plana vitrectom; SB, scleral buckling.