Table 1.

Meta-analyses examples

Meta-analysis	Title	Intervention	Outcome measure	Number of trials	Number of participants
Afshari and others 2007 [16]	Antithrombin III for critically ill patients	Antithrombin III	Mortality	20	3,458
Al-Inany and others, 2006 [17]	Cycle cancellations due to poor ovarian response	Gonadotropin releasing hormone for assisted reproductive therapy	Number of cycle cancellations	13	2,543
Soll and others, 1997 [18]	Prophylactic surfactant to prevent morbidity and mortality in preterm infants.	Surfactant	Mortality or pneumothorax	8	988
Wetterslev and Juhl, 2006 [19]	Effect of perioperative β-blockade on non-fatal perioperative AMI	Perioperative β-blockers for non-cardiac surgery	Perioperative myocardial infarction within 30 days of operation	11	2,211
Bury and Tudehope, 2000 [20]	Effect of antibiotics on necrotizing enterocolitis in newborn	Enteral antibiotics in newborn	Necrotizing enterocolitis	5	458
Li and others, 2007 [21]	Intravenous magnesium for acute myocardial infarction	Magnesium	Mortality	23	72,472
Meyhoff and others, 2008 [22]	Perioperative ventilation with 80% versus 30% oxygen during intestinal surgery	Perioperative ventilation with 80% oxygen	Wound infection within 15 days of surgery	4	989