Single-step laparoscopic surgery reduces postoperative morbidity in the management of gallstones

Table 3 Risk of bias assessment

Ref.	Randomization technique	Power calculations	Blinding	Intention-to-treat analysis	Concealment	Inclusion criteria	Exclusion criteria
Farid et al[13], 2024	1:1 allocation via computer-generated random numbers	Not reported	Not reported	No	Yes	Reported	Reported
Lella et al[14], 2006	1:1 allocation via computer-generated random numbers	Reported	Not reported	No	No	Reported	Reported
Morino et al[15], 2006	1:1 allocation via computer-generated random numbers	Reported	Not reported	Yes	Yes	Reported	Reported
Rábago et al[16], 2006	Allocation via random number generation	Reported	Not reported	Yes	Yes	Reported	Reported
Sahoo et al[17], 2014	1:1 allocation via computer-generated random numbers	Not reported	Not reported	No	Yes	Reported	Reported
Tzovaras et al[18], 2012	1:1 allocation via block randomization	Reported	Not reported	Yes	Yes	Reported	Reported