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Fig. 5 | BMC Neurology

Fig. 5

From: Severe pain-related adverse events of percutaneous dilatational tracheostomy performed by a neurointensivist compared with conventional surgical tracheostomy in neurocritically ill patients

Fig. 5

The number of total tracheostomy and PDT increased progressively compared to conventional tracheostomy (a). Especially, the total number of tracheostomy rapidly increased from the fourth quarter of 2015. Based on a simple correlation analysis, we found a linear trend with moderate to high correlation for the numbers of PDT, conventional surgical tracheostomy, and total tracheostomy (r = 0.915, P < 0.001, r = − 0.544, P = 0.024 and r = 0.667, P = 0.003, respectively). The overall incidence rate of SAE was gradually decreased (b). The incidence rate of SAE was calculated as the percentage of the number of SAE over the number of tracheostomies. We found a linear trend with high correlation for the incidence rate of SAE (r = − 0.655, P = 0.004)

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