Bhagat 2007.
Study characteristics | ||
Methods |
Study design: placebo controlled, double blind, prospective RCT Number of centers/setting: not reported Country: India Dates of the study: September 2004 to July 2005 |
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Participants |
Total number of participants randomized: 60
Age (mean, years):
Sex (M/F):
Stone location:
Stone size: not reported Inclusion criteria: people who were to receive SWL for a single radiopaque renal 6–24 mm or ureteral 6–15 mm calculus Exclusion criteria: recent open or endoscopic surgical intervention, radiolucent calculus, past unsuccessful SWL, renal impairment (creatinine > 1.5 mg/dL), inadequate kidney function, recurrent calciuria, UTI, receiving calcium channel blockers or alpha1‐blockers (or both), congenital urinary anomalies, history of pyeloureteral surgery and children |
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Interventions |
Treatment group:
Control group: placebo SWL:
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Outcomes |
Primary: number stone clearance
Secondary: median analgesic dose Subgroups: stone size |
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Funding sources | Not reported | |
Declarations of interest | Not reported | |
Notes |
Language of publication: English Type of publication: full text Date of contact attempt with study authors: 7 July 2019 – general inquiry to Drs Devasia and Kekre Contact status: no reply to‐date |
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Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Quote: "Block randomization was performed with even distribution, using computer‐generated numbers." Comment: appropriate method of random sequence generation. |
Allocation concealment (selection bias) | Unclear risk | Comment: allocation concealment not addressed. |
Blinding of participants and personnel (performance bias) All outcomes | Low risk | Quote: "placebo‐controlled, randomized, double‐blind study": "the patients were randomized into either placebo or study group." Comment: participants likely blinded. |
Blinding of outcome assessment (detection bias) Investigator assessed; not susceptible (auxiliary treatments) | Low risk | Comment: outcome judged not susceptible to detection bias. |
Blinding of outcome assessment (detection bias) Investigator assessed; susceptible (stone clearance, time to stone clearance) | Unclear risk | Comment: blinding of outcome assessors not addressed. |
Blinding of outcome assessment (detection bias) Investigator assessed; susceptible (major adverse events) | Unclear risk | Comment: blinding of outcome assessors not addressed. |
Incomplete outcome data (attrition bias) All outcomes | Low risk | Quote: "of the 60 patients randomized 58 completed the study, and one from each group discontinued medication and was excluded from analysis." Comment: low (< 10%) loss to follow‐up. |
Selective reporting (reporting bias) | Unclear risk | Comment: no protocol available. |
Other bias (additional SWL sessions) | Unclear risk | Comment: unclear whether > 1 SWL session was administered. |