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Table 4 Baseline patients demographics for different gas groups

From: Comparison of outcomes between 20, 23 and 25 gauge vitrectomy for idiopathic macular hole

Parameter C3F8, n= 75 SF6, n= 67 P value
Age, years    
Mean ±SD 69.8±8.3 65.6±8.2 0.003a
Range 47-87 46-86  
Gender, n, %    
Female 49/ 65.3 % 49/73.1 % 0.316c
Male 26/34.7 % 18/26.9 %  
Preoperative VA    
Median (logMAR) 0.70 0.70 0.381b
Range (logMAR) 0.30-2.30 0.18-1.82  
Lens Status, n, %    
Phakic 54/75 % 62/92.5 % 0.002c
Pseudophakic 12/28 % 5/7.5 %  
Stage of MH, n, %    
Stage 2 24/32 % 23/34 %  
Stage 3 34/46 % 20/30 % 0.022c
Stage 4 12/16 % 24/36 %  
ICG 75/100 % 62/92.5 % 0.055c
Duration face-down    
positioning, Mean by Day 9.1 8.5 0.126a
  1. Abbreviation: n number, % percent
  2. aT-test
  3. bMann-Whitney U test
  4. cChi-square test and Fisher’s exact test