2.4. Data Extraction and Quality Assessment
Data from eligible studies included in the analysis were extracted by
two independent researchers (Z.Y.Z and F.L), and any potential
disagreements were resolved by a third researcher (R.X.W). The extracted
data mainly includes: title, first author, publication year, study
design, sample size, follow-up time, LAAO device, Pre-procedure imaging
and ICE Location. Meanwhile we also extracted relevant clinical
outcomes, including: acute procedural success, total procedural time,
Fluoroscopic time, Contrast volume, short-term complications and
long-term complications.
Two independent researchers (Z.Y.Z and J.Z) evaluated study quality by
two appraisal tools. The Newcastle-Ottawa Quality Assessment Scale was
used to evaluated the two-arm observation [4]. The
Institute of Health Economics checklist was used for the single-arm
study[5]. Any disagreements were discussed and
resolved by consulting a third researcher (R.X.W).