Table 3 Multivariate logistic regression analysis model to find association with the difficulty in crossing the culprit lesion.

From: Factors associated with difficulty in crossing the culprit lesion of acute myocardial infarction

Dependent variable : the difficulty in crossing the culprit lesion

Independent variables

Odds ratio

95% confidence interval

P value

Proximal reference diameter

0.313

0.185–0.529

 < 0.001

Previous PCI

3.065

1.612–5.830

0.001

Moderate-severe calcification (vs. none-mild)

4.322

2.354–7.935

 < 0.001

Blunt type of obstruction site (vs. tapered)

12.646

6.805–23.503

 < 0.001

The presence of collateral to the culprit lesion (Rentrop grade1–3)

2.110

1.145–3.888

0.017

  1. The stepwise model includes the following variables: age, proximal reference, previous PCI, number of diseased vessels, initial TIMI flow grade of culprit, calcification, type of obstruction site, the presence of collateral to the culprit lesion, In-stent lesion, TIMI thrombus grade.
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