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Table 1 Baseline characteristics of patients with age-related macular degeneration and age-matched controls

From: Peripapillary choroidal thickness after intravitreal ranibizumab injections in eyes with neovascular age-related macular degeneration

  AMD group Control group P value
(n = 39) (n = 39)
Mean age at diagnosis (years) 68.8 ± 6.5 68.3 ± 6.5 0.755*
Sex (M : F) 18 : 21 16 : 23 0.648**
Lens (Phakia : Pseudophakia) 37 : 2 35 : 4 0.675**
Refractive error (D)a 0.46 ± 1.43 0.34 ± 1.64 0.734*
Type of neovascularization, eyes (%)
 Type 2 35 (89.7 %)   
 Type 3 4 (10.3 %)   
  1. Continuous variables are expressed as mean ± standard deviation
  2. *P value based on student t-test
  3. **P value based on Chi-square test or Fisher’s exact test for categorical variables
  4. aRefractive errors were obtained from 37 eyes in the AMD group and 35 eyes in the control group, which included all eyes except two eyes exhibiting pseudophakia in the AMD group and four eyes exhibiting pseudophakia in the control group
  5. AMD age-related macular degeneration, M Male, F female, D diopters