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Table 2 Main quality assessment of included studies

From: Mechanical versus manual chest compressions for cardiac arrest: a systematic review and meta-analysis

Year Author Study design Description of randomization Allocation concealment Description of withdrawals Blinding outcome assessment
1978 George J. Taylor RCT +
1993 Henry R. Halperin RCT +
1998 Edward T. Dickinson RCT + +
2006 Christer Axelsson Descriptive, non-randomised, controlled trial +
2006 Al Hallstrom RCT + +
2006 Marcus Eng Hock Ong Phased, prospective cohort trial +
2010 Lu Xiaoguang RCT
2011 David Smekal RCT +
2012 Marcus Eng Hock Ong Phased, prospective cohort trial +
2014 Sten Rubertsson RCT + +
2015 Gavin D Perkins RCT + +
2015 Sebastian Zeiner Prospective observational study
  1. RCT randomized controlled trial