Accidental epidural catheter removal rates and strength required for disconnection: a retrospective cohort and laboratory study

Table 3 Rates of accidental epidural catheter removal by type of catheter connection

Removal method	Old group	New group	Taping group
Removal method	(n = 360)	(n = 182)	(n = 378)
Scheduled
Count	347 (96.4%)	171 (94.0%)	374 (98.9%)
Adjusted residual	-0.804	-2.631	2.927
Dislodgement
Count	6 (1.7%)	1 (0.5%)	3 (0.8%)
Adjusted residual	1.360	-0.781	-0.717
Disconnection
Count	7 (1.9%)	10 (5.5%)	1 (0.3%)
Adjusted residual	-0.021	3.848	-3.094

Values are presented as counts (%) or adjusted residuals
Residual analysis was based on Fisher's exact test
Adjusted residuals smaller than − 1.96 or greater than 1.96 indicate a statistically significant difference at p < 0.05
Adjusted residuals smaller than − 2.58 or greater than 2.58 indicate a statistically significant difference at p < 0.01

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