Table 3 Average and regional peripapillary vessel density (pVD) percentage in each group and the comparisons between four groups
From: Peripapillary vessel density correlates with visual field mean sensitivity in highly myopic eyes
|  | Group1 (n = 89) | Group2 (n = 102) | Group3 (n = 122) | Group4 (n = 80) | P value | Pair comparison (group) |
|---|---|---|---|---|---|---|
Average pVD (%) | 52.77 ± 2.86 | 51.49 ± 3.21 | 50.48 ± 3.43 | 47.61 ± 6.58 |  < 0.001* | 4 < 3,2 < 1 |
TS pVD (%) | 58 (56–60) | 58 (55–60) | 57 (53–60) | 54 (47.3–58) |  < 0.001* | 4 < 3,2,1 |
TI pVD (%) | 55 (52–57) | 56 (52–58) | 55 (51–58) | 52 (45.3–58) | 0.001* | 4 < 3,2,1 |
ST pVD (%) | 57 (53.5–59) | 55 (53–58) | 54 (51–57) | 53 (47–57.8) |  < 0.001* | 4,3 < 1; 4 < 2 |
IT pVD (%) | 59 (56–62) | 57.5 (54–60) | 57 (54–59) | 54 (49–58) |  < 0.001* | 4 < 3,2,1; 3 < 1 |
SN pVD (%) | 51 (47–55) | 50 (46–54) | 49 (45.8–52) | 46 (41–50) |  < 0.001* | 4 < 3,2,1 |
IN pVD (%) | 51 (47–54) | 49 (46–53) | 50 (45.8–52) | 47 (42.3–50.8) |  < 0.001* | 4 < 2,1; 3 < 1 |
NS pVD (%) | 49 (45.5–51) | 45 (40.8–49) | 45 (40–48) | 44.5 (39–49) |  < 0.001* | 4,3,2 < 1 |
NI pVD (%) | 48 (43–50) | 42 (38–47) | 43 (39–46.3) | 44 (36.3–47) |  < 0.001* | 4,3,2 < 1 |