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Table 3 Morphology of filtering blebs in the control group

From: Deterioration of filtering bleb morphology and function after phacoemulsification

Time after study commencement Study 6 12 18
  Commencement months months months
Bleb morphology Surface Small 26.4% 26.4% 26.4% 27.8%
Medium 45.8% 47.2% 47.2% 45.8%
Large 27.8% 26.4% 26.4% 26.4%
Statistical analysis   Z = 0.4 Z = 0.3 Z = 0.6
(Commencement vs Consecutive Examinations)
p = 0.7 p = 0.7 p = 0.6
Elevation Elevated 86.1% 86.1% 84.7% 84.7%
Flat 13.9% 13.9% 15.3% 15.3%
Statistical analysis   Z = 0.0 Z = 0.6 Z = 0.6
   (Commencement vs Consecutive Examinations)   p > 0.9 p = 0.6 p = 0.6
  1. Regarded as statistically significant if p < 0,05, (the sign test).
  2. Z – the value of test function for the given test.