Table 1. Contingency table showing the association between Impedance and Threshold Neural Response Telemetry (TNRT) categories. There is a statistically significant association between electrode segments and TNRT categories with normal impedance.

Impedance	TNRT (no. of electrodes, n=1232)
	High	Low	Normal	Not Recordable	Total	χ², p value
Normal	6	2	1204	12	1224	12.74, 0.047
Basal	2	0	437	7
Mid	4	0	382	2
Apical	0	2	385	3
Open Circuit	0	0	0	4	4
Short Circuit	0	0	4	0	4