### Abstract

A major issue in evaluating the validity and utility of a criterion for a target diagnostic syndrome requires that its efficiency be compared to those of other diagnoses. A criterion may prove quite sensitive for diagnosis A, but this level may turn out to be a lesser magnitude than for diagnosis B and C. A new statistic, that of 'comparative sensitivity', introduces a formula for comparing the relative diagnostic sensitivity of a criterion when several diagnostic categories are being evaluated simultaneously. Another issue of concern relates to the positive predictive power of diagnostic criterion; the significance and utility of this power is a function largely of the prevalence or base-rate of the diagnostic syndrome for which it is intended to serve as an index. Accordingly, a second new statistic, that termed the 'predictive/prevalence ratio' is presented; it provides a standard gauge for evaluating the effective utility of the PPP statistic. The logic, methodology, and several examples are presented for these new statistics.

Original language | English |
---|---|

Pages (from-to) | 163-173 |

Number of pages | 11 |

Journal | Journal of Personality Disorders |

Volume | 3 |

Issue number | 3 |

State | Published - Jan 1 1989 |

### ASJC Scopus subject areas

- Psychiatry and Mental health

### Cite this

*Journal of Personality Disorders*,

*3*(3), 163-173.

**New diagnostic efficiency statistics : Comparative sensitivity and predictive/prevalence ratio.** / Millon, T.; Bochian, N.; Tringone, R.; Antoni, Michael H; Green, C. J.

Research output: Contribution to journal › Article

*Journal of Personality Disorders*, vol. 3, no. 3, pp. 163-173.

}

TY - JOUR

T1 - New diagnostic efficiency statistics

T2 - Comparative sensitivity and predictive/prevalence ratio

AU - Millon, T.

AU - Bochian, N.

AU - Tringone, R.

AU - Antoni, Michael H

AU - Green, C. J.

PY - 1989/1/1

Y1 - 1989/1/1

N2 - A major issue in evaluating the validity and utility of a criterion for a target diagnostic syndrome requires that its efficiency be compared to those of other diagnoses. A criterion may prove quite sensitive for diagnosis A, but this level may turn out to be a lesser magnitude than for diagnosis B and C. A new statistic, that of 'comparative sensitivity', introduces a formula for comparing the relative diagnostic sensitivity of a criterion when several diagnostic categories are being evaluated simultaneously. Another issue of concern relates to the positive predictive power of diagnostic criterion; the significance and utility of this power is a function largely of the prevalence or base-rate of the diagnostic syndrome for which it is intended to serve as an index. Accordingly, a second new statistic, that termed the 'predictive/prevalence ratio' is presented; it provides a standard gauge for evaluating the effective utility of the PPP statistic. The logic, methodology, and several examples are presented for these new statistics.

AB - A major issue in evaluating the validity and utility of a criterion for a target diagnostic syndrome requires that its efficiency be compared to those of other diagnoses. A criterion may prove quite sensitive for diagnosis A, but this level may turn out to be a lesser magnitude than for diagnosis B and C. A new statistic, that of 'comparative sensitivity', introduces a formula for comparing the relative diagnostic sensitivity of a criterion when several diagnostic categories are being evaluated simultaneously. Another issue of concern relates to the positive predictive power of diagnostic criterion; the significance and utility of this power is a function largely of the prevalence or base-rate of the diagnostic syndrome for which it is intended to serve as an index. Accordingly, a second new statistic, that termed the 'predictive/prevalence ratio' is presented; it provides a standard gauge for evaluating the effective utility of the PPP statistic. The logic, methodology, and several examples are presented for these new statistics.

UR - http://www.scopus.com/inward/record.url?scp=0024430131&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024430131&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0024430131

VL - 3

SP - 163

EP - 173

JO - Journal of Personality Disorders

JF - Journal of Personality Disorders

SN - 0885-579X

IS - 3

ER -