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Table 4 Analytical statistics (Kruskal–Wallis test, Wilcoxon signed rank test, ANOVA-type statistics and rank statistics, interaction contrasts and pairwise Mann–Whitney-Test) for macular thickness preoperative and at the time of follow up (6 months, postop)

From: Surgical management of submacular hemorrhage due to n-AMD: a comparison of three surgical methods

Groups Time DF V/Stat. Chi2 p Rank means N RTE Type
A 526 0.000 Wilcox
B 894 0.000 Wilcox
C 50 0.147 Wilcox
Preop 2 9.46 0.009 Kruskal
Postop 2 3.28 0.194 Kruskal
Groups 1.53 1.30 0.267 ANOVA
Time 1.00 103.68 0.000 ANOVA
Groups Time 1.40 4.72 0.018 ANOVA
A 79 64 0.46 Rank
B 91 84 0.53 Rank
C 84 22 0.49 Rank
Preop 118 85 0.69 Rank
Postop 52 85 0.30 Rank
A Preop 117 32 0.68 Rank
A Postop 41 32 0.24 Rank
B Preop 133 42 0.78 Rank
B Postop 49 42 0.29 Rank
C Preop 103 11 0.61 Rank
C Postop 41 11 0.38 Rank
A:B 0.079 Pairwise
A:C 0.587 Pairwise
B:C 0.028 Pairwise
B:A Pre:Post 1.000 Interact
C:B Pre:Post 0.51 Interact
C:A Pre:Post 0.081 Interact