Factors affecting complete procedural success – results of
logistic regression analysis
Univariate logistic regression analysis showed that the factors that
reduced the probability of clinical success were as follows: all types
of fibrous tissue binding sites: decrease of 92% (OR=0.080;
p<0.001), fibrous tissue binding the lead to the SVC: decrease
of 85.1% (OR=0.149; p<0.001), to the RA: decrease of 82.5%
(OR= 0.175; p< 0.01), to the TV: decrease of 81.2% (OR=
0.188; p<0.01), to the RV: decrease of 84.9% (OR= 0.151;
p<0.001), lead-to-lead binding sites: decrease of 72.5% (OR=
0.275; p< 0.01) and the presence of LDTD: decrease of 73.5%
(OR=0.265; p< 0.05).
Multivariate analysis showed that fibrous tissue binding the lead to the
SVC (OR=0.296; p<0.05), to the RA (OR=0.323;
p<0.05), to the RV (OR=0.297; p<0.05) were the
strongest predictors of procedural success. LDTD approached the
borderline of significance (OR=0.316; p=0.067) (Table 4).