Table 1

Characteristics of included studies

StudyCountryDesignStudy periodSizeMale (%)Age, yearsLevel of experienceHUD
Aldaas et al21USAConsecutiveNR705061±18BothVscan
Alexander et al22USANRApril–November 20005375359InexperiencedOptigo
Andersen et al23NorwayRandomMarch–September 20101086469.1±14ExperiencedVscan
Biais et al24FranceConsecutiveFebruary–May 20111513555±20ExperiencedVscan
Bruce et al9USANRNR3746266BothSonoHeart
Coletta et al25ItalyConsecutiveApril–June 20031125761±11ExperiencedOptigo
Cullen et al26USAConsecutive2012–20131904962±17ExperiencedVscan
DeCara et al27USANRNR300NRNRExperiencedOptigo
Fedson et al28USAConsecutiveNR103NRNRInexperiencedOptigo
Galasko8UKConsecutive2000–20015625662±11ExperiencedOptigo
Ghani et al29USAConsecutiveNR805175±13InexperiencedOptigo
Giusca et al30RomaniaConsecutiveNR565460±12InexperiencedAcuson P10
Gulič et al31SloveniaConsecutiveNR2004370BothVscan
Khan32USAConsecutive2012–20132405371±17ExperiencedVscan
Kirkpatrick33USANRNR634665±16InexperiencedOptigo
Kobal et al34USAConsecutiveNR616270±19InexperiencedOptigo
Liebo35USAConsecutiveFebruary–March 2010974568±17BothVscan
López-Palmero et al36SpainNRJuly–December 20132234276InexperiencedVscan
Lucas et al37USAConsecutiveMarch–May 20073225356±13InexperiencedMicromaxx
Lucas et al38USAConsecutive2008–20092105555InexperiencedNR
Martin et al39USAConsecutive2004–20053544763±19InexperiencedSonosite Elite
Mehta et al40USANRNR2506661±15ExperiencedVscan
Mjølstad et al41NorwayConsecutiveApril–June 20111995466±18InexperiencedVscan
Nilsson et al42SwedenNR2016–20171005570±12InexperiencedVscan
Olesen43DenmarkNRNR2604980ExperiencedVscan
Perez-Avraham et al44IsraelConsecutiveJuly–December 2004853759±14InexperiencedOptigo
Razi et al45USAConsecutiveNR505857±17InexperiencedVscan
Ruddox et al46NorwayNR2011–20123036173InexperiencedVscan
Stokke et al13NorwayRandomFebruary–May 2012727265±16BothVscan
Vignon et al47FranceConsecutiveNR556961±16ExperiencedSonoHeart
Vourvouri et al48The NetherlandsConsecutiveNR886459±12ExperiencedSonoHeart or Optigo
Wejner-Mik et al49PolandConsecutiveNR876761±16ExperiencedLumify
Xie et al50USAConsecutiveNR1005559±17ExperiencedSonoHeart
  • HUD, handheld ultrasound devices; NR, not reported.