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. 2014 Oct 9;2014(10):CD002109. doi: 10.1002/14651858.CD002109.pub4

Udupa 2011.

Methods Randomised study
Participants Males and females 18 to 55 years of age
Interventions Oral clarithromycin/oral azithromycin or oral levofloxacin/oral high‐dose amoxicillin
Outcomes Primary: clinical response. Secondary: adverse effects
Notes Study conducted in Rural Health Training Centre in India
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Unclear risk No stated method of randomisation
Allocation concealment (selection bias) Unclear risk Not explicitly stated
Blinding (performance bias and detection bias) 
 All outcomes Unclear risk Not explicitly stated
Incomplete outcome data (attrition bias) 
 All outcomes Unclear risk No CONSORT diagram presented, therefore reasons for exclusion of patients at the entry level are unclear
Selective reporting (reporting bias) Low risk The study reported on every patient that was included in the trial (n = 31)
Other bias Low risk No explicit mention of biopharmaceutical industry involvement