### Abstract

Linear discriminant function analysis was used to test the independent prognostic value of nine variables in patients with coronary artery disease. For 68 medically treated patients who met the criteria for inclusion in the discriminant function analysis, the most reliable predictor of 2 year survival status was the left ventricular ejection fraction. The prognostic value of the ejection fraction was not improved by the addition of the number of vessels diseased. Comparisons of the survival of 130 medical and 284 surgical patients were made using subsets based on the ejection fraction. When the ejection fraction was ≥50%, the probability of 4 year survival was high for both medical (91%) and surgical (96%) groups. When the ejection fraction was <25%, the probability of 2 year survival was low in both groups. However, for patients with ejection fraction 25 through 49%, the surgical patients had a better chance (p<0.05) for a 3 year survival (89%) than did medical patients (68%). This study emphasizes the prognostic significance of the left ventricular ejection fraction, which should be considered in any comparison of survival in medically and surgically treated patients.

Original language | English (US) |
---|---|

Pages (from-to) | 85-90 |

Number of pages | 6 |

Journal | Mayo Clinic Proceedings |

Volume | 52 |

Issue number | 2 |

State | Published - 1977 |

Externally published | Yes |

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### ASJC Scopus subject areas

- Medicine(all)

### Cite this

*Mayo Clinic Proceedings*,

*52*(2), 85-90.

**Survival predictors in coronary artery disease. Medical and surgical comparisons.** / Vlietstra, R. E.; Assad-Morell, J. L.; Frye, R. L.; Elveback, L. R.; Connolly, D. C.; Ritman, E. L.; Pluth, J. R.; Barnhorst, D. A.; Danielson, G. K.; Wallace, R. B.

Research output: Contribution to journal › Article

*Mayo Clinic Proceedings*, vol. 52, no. 2, pp. 85-90.

}

TY - JOUR

T1 - Survival predictors in coronary artery disease. Medical and surgical comparisons

AU - Vlietstra, R. E.

AU - Assad-Morell, J. L.

AU - Frye, R. L.

AU - Elveback, L. R.

AU - Connolly, D. C.

AU - Ritman, E. L.

AU - Pluth, J. R.

AU - Barnhorst, D. A.

AU - Danielson, G. K.

AU - Wallace, R. B.

PY - 1977

Y1 - 1977

N2 - Linear discriminant function analysis was used to test the independent prognostic value of nine variables in patients with coronary artery disease. For 68 medically treated patients who met the criteria for inclusion in the discriminant function analysis, the most reliable predictor of 2 year survival status was the left ventricular ejection fraction. The prognostic value of the ejection fraction was not improved by the addition of the number of vessels diseased. Comparisons of the survival of 130 medical and 284 surgical patients were made using subsets based on the ejection fraction. When the ejection fraction was ≥50%, the probability of 4 year survival was high for both medical (91%) and surgical (96%) groups. When the ejection fraction was <25%, the probability of 2 year survival was low in both groups. However, for patients with ejection fraction 25 through 49%, the surgical patients had a better chance (p<0.05) for a 3 year survival (89%) than did medical patients (68%). This study emphasizes the prognostic significance of the left ventricular ejection fraction, which should be considered in any comparison of survival in medically and surgically treated patients.

AB - Linear discriminant function analysis was used to test the independent prognostic value of nine variables in patients with coronary artery disease. For 68 medically treated patients who met the criteria for inclusion in the discriminant function analysis, the most reliable predictor of 2 year survival status was the left ventricular ejection fraction. The prognostic value of the ejection fraction was not improved by the addition of the number of vessels diseased. Comparisons of the survival of 130 medical and 284 surgical patients were made using subsets based on the ejection fraction. When the ejection fraction was ≥50%, the probability of 4 year survival was high for both medical (91%) and surgical (96%) groups. When the ejection fraction was <25%, the probability of 2 year survival was low in both groups. However, for patients with ejection fraction 25 through 49%, the surgical patients had a better chance (p<0.05) for a 3 year survival (89%) than did medical patients (68%). This study emphasizes the prognostic significance of the left ventricular ejection fraction, which should be considered in any comparison of survival in medically and surgically treated patients.

UR - http://www.scopus.com/inward/record.url?scp=0017337102&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0017337102&partnerID=8YFLogxK

M3 - Article

C2 - 305511

AN - SCOPUS:0017337102

VL - 52

SP - 85

EP - 90

JO - Mayo Clinic Proceedings

JF - Mayo Clinic Proceedings

SN - 0025-6196

IS - 2

ER -