3.2. Pooled data synthesis for outcomes of interest
The pooled length of in-hospital stay and intensive care unit stay was
found to be 21 days (95% CI 15.9-26, reported by 13 studies including
1227 patients) and 6.2 days (95% CI 4.7-7.7, reported by 15 studies
including 1419 patients), respectively. Using the random effects model,
the pooled estimates of postoperative dSINE and endoleak were 0.02 (95%
CI 0.01-0.06, I2 = 78%; [Figure 2 ]) and
0.03 (95% CI 0.01-0.11, I2 = 89%; [Figure
3 ]), respectively. Moreover, the pooled rate of secondary
endovascular treatment of aortic pathologies after FET during follow-up
was 0.07 (95% CI 0.05-0.12, I2 = 89%), depicted inFigure 4 . Furthermore, the pooled estimates of FL thrombosis at
the stent level, the descending thoracic aorta (DTA) level, and the
abdominal aorta (AA) level were 0.91 (95% CI 0.75-0.97,
I2 = 92%), 0.61 (95% CI 0.49-0.72,
I2 = 86%), and 0.36 (95% CI 0.25-0.48,
I2 = 88%), respectively (Supplemental Figures
1A-C ).
Of major postoperative outcomes, the pooled estimate of in-hospital
mortality was 0.05 (95% CI 0.04-0.07, I2 = 52%),
which was reported in 20 studies comprising of 2657 patients in total
(Figure 5 ). Paraplegia and renal failure were detected in 0.03
(95% CI 0.02-0.04, I2 = 21%) and 0.11 (95% CI
0.07-0.16, I2 = 89%) of patients, respectively
(Figures 6 and 7 ). In addition, the pooled estimate of
cerebrovascular events was 0.06 (95% CI 0.04-0.10, I2= 89%; Figure 8 ). Lastly, the 30-day mortality rate was 0.06
(95% CI 0.03-0.11; I2 = 79%; Figure 9 ).