Cox regression analysis of various factors as a risk for surgical failure by complete success criteria.^a

CI = confidence interval, NA = not applicable, PDR = proliferative diabetic retinopathy, IOP = intraocular pressure, NVG = neovascular glaucoma, PPV = pars plana vitrectomy, TLE = trabeculectomy. aTwenty-two eyes failed to meet the complete success criteria. bAdjusted to account for the correlation of both eyes in the same patient. cVariables with P <0.2 in the univariate Cox regression analysis were entered into the stepwise multivariate analysis. dNineteen phakic eyes after TLE were analyzed. Cox regression analysis of various factors as a risk for surgical failure by complete success criteria.a