Han 2006a.

Methods	Study design: RCT. Study duration: NS. Follow‐up/Treatment duration: 28 days.
Participants	Country: Korea. Setting: NS. Patients with stones < 5 mm that were located in the lower ureter. Number: treatment group: 35; control group: 32. Mean age ± SD, years: NS. Sex, M/F: NS. Exclusion criteria: UTI; hydronephrosis; pregnancy; diabetes; multiple stones; low blood pressure.
Interventions	Treatment group Tamsulosin 0.2 mg orally once daily. Control group Caroverine (a spasmolytic drug): 20 mg orally 3 times daily. All participants were allowed 30 mg ketorolac IM injections on demand.
Outcomes	Stone expulsion rate. Stone expulsion time. Use of analgesics.
Funding sources	None stated.
Declarations of interest	None stated.
Notes	Only English abstract available for judgement.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	No quotes available. Comment: randomisation stated but no information on method used was available; therefore risk of selection bias was considered to be unclear.
Allocation concealment (selection bias)	Unclear risk	No quotes available. Insufficient information to permit judgement. Comment: Owing to insufficient information, allocation concealment was considered to have unclear risk of bias.
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	No quotes available. No blinding described. Comment: Owing to insufficient information, risk of performance bias was considered to be unclear.
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	No quotes available. No blinding of outcome assessments described. Comment: Owing to insufficient information, risk of detection bias was considered to be unclear.
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	No quotes available. Comment: Losses to follow‐up were not clearly described; therefore risk of attrition bias was considered to be unclear.
Selective reporting (reporting bias)	Unclear risk	No quotes available. Comment: Owing to insufficient information to permit judgement, risk of reporting bias was considered to be unclear.
Other bias	Unclear risk	No quotes available. Comment: Owing to insufficient information to permit judgement, risk of other sources of bias was considered to be unclear.