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. 2020 Feb 6;2020(2):CD007920. doi: 10.1002/14651858.CD007920.pub3

Jiang 2015.

Methods Study design: parallel‐group RCT
Setting: single center trial in China
Number randomised: 129 participants
Unit of analysis: eyes (both eyes analyzed separately)
Maximum planned (or stated) length of follow‐up: unclear
Number not included in final analysis: unclear
Participants Number of men: 33 in the intervention group and 35 in the comparator group
Number of women: 29 in the intervention group and 32 in the comparator group
Mean age: 60.3 years in the intervention group and 60.24 years in the comparator group
Mean IOP at baseline: not reported
Inclusion criteria: not reported
Exclusion criteria: not reported
Interventions Intervention (N = 62): “retinal laser photocoagulation combined with ranibizumab treatment”
Comparator (N = 67): “retinal laser photocoagulation”
Outcomes From the abstract “After the treatment, the degeneration of iris neovascularization, visual acuity, intraocular pressure, ocular fundus, and the adverse reactions were evaluated.”
Notes Trial registration: not reported
Study dates: 2012 to 2014
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) High risk The sequence generation was not truly random (investigators assigned participants to treatment based on medical record number or a similar identifier)
Allocation concealment (selection bias) High risk Investigators enrolling participants could possibly foresee assignments, introducing bias
Blinding of participants and personnel (performance bias) 
 All outcomes Unclear risk Unclear risk of bias – insufficient information to permit judgement of low risk or high risk of bias
Blinding of outcome assessment (detection bias) 
 All outcomes Unclear risk Unclear risk of bias – insufficient information to permit judgement of low risk or high risk of bias
Incomplete outcome data (attrition bias) 
 All outcomes Unclear risk Unclear risk of bias – insufficient information to permit judgement of low risk or high risk of bias
Selective reporting (reporting bias) Unclear risk Unclear risk of bias – insufficient information to permit judgement of low risk or high risk of bias
Other bias Unclear risk Unclear risk of bias – insufficient information to permit judgement of low risk or high risk of bias; study was not registered in a clinical trials registry and funding sources were not clearly reported