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. 2014 Jan 23;9(1):e86045. doi: 10.1371/journal.pone.0086045

Table 1. Characteristics and quality scores of included studies.

First author (year) Design Location Follow-up(mo) No. eyes* Age (year)* Quality score(%)
Beltran-Agullo (2013) RCCT Canada 6 33/31 65.9/61.9 68.75
Dahan (2012) RCCT South Africa 30 15/15 65.4/65.4 75.00
de Jong (2011) RCCT The Netherlands 60 39/39 62.4/68.6 75.00
Patel (2013) RCCT Canada 12 23/20 18∼85** 65.63
*

Ex-PRESS implantation group/Trabeculectomy group;

**

Without mean age records; RCCT = randomized controlled clinical trial.