Table 2.

Factor analysis–Cox regression

Factor	Device-related revision (n=2)			All-cause revision (n=4)
	Exp B	Confidence limits	P	Exp B	Confidence limits	P
Centre	0.466	0.03–7.59	0.592	0.751	0.10–5.59	0.780
Gender	0.000	0.00	0.985	2.915	0.31–27.80	0.353
Age >40 years	0.229	0.014–3.69	0.298	0.269	0.02–3.64	0.323