Percutaneous dilatational tracheostomy versus surgical tracheostomy in critically ill patients: a systematic review and meta-analysis

Table 2 Summary of validity assessments for RCTs comparing percutaneous dilatational and surgical tracheostomy in critically ill patients

Study	Allocation concealment	Blinding	Intention-to-treat analysis	Predefined outcomes	Baseline Imbalance
Hazard [30]	No	No	Yes	Yes	No
Crofts [26]	No	No	Yes	Yes	No
Friedman [28]	No	No	Yes	Yes	No
Holdgaard [32]	Yes	No	Yes	Yes	No
Jong Joon [21]	No	No	Yes	No	No
Gysin [29]	No	Yes	Yes	Yes	No
Porter [34]	Yes	No	Yes	Yes	No
Raine [35]	Yes	No	Yes	No	Yes
Heikkinen [31]	No	No	Yes	No	No
Freeman [27]	Yes	No	Yes	Yes	No
Massick [40]	Yes	No	Yes	Yes	No
Melloni [33]	No	No	Yes	Yes	No
Sustic [36]	No	No	Yes	Yes	No
Wu [38]	No	No	No	Yes	No
Antonelli [25]	Yes	No	Yes	Yes	No
Tabaee [37]	No	No	Yes	Yes	No
Silvester [39]	Yes	Yes	Yes	Yes	No

ICU, intensive care unit; NR, not reported; OT, operating theatre; PDT, percutaneous dilatational tracheostomy; ST, surgical tracheostomy.

ISSN: 1364-8535