Term: Cstatistic
Glossary Definition
Last Updated: 20111024
Definition:
The probability that predicting the outcome is better than chance. Used to compare the goodness of fit of logistic regression models, values for this measure range from 0.5 to 1.0. A value of 0.5 indicates that the model is no better than chance at making a prediction of membership in a group and a value of 1.0 indicates that the model perfectly identifies those within a group and those not. Models are typically considered reasonable when the Cstatistic is higher than 0.7 and strong when C exceeds 0.8 (Hosmer & Lemeshow, 2000; Hosmer & Lemeshow, 1989).
References

Hosmer DW, Lemeshow S.
Applied Logistic Regression.
New York, NY:
John Wiley & Sons;
1989.(View)

Hosmer DW, Lemeshow S.
Applied Logistic Regression (2nd Edition).
New York, NY:
John Wiley & Sons;
2000.(View)
Term used in

Fransoo R, Martens P, Prior H, Chateau D, McDougall C, Schultz J, McGowan K, Soodeen R, Bailly A.
Adult Obesity in Manitoba: Prevalence, Associations, and Outcomes.
Winnipeg, MB:
Manitoba Centre for Health Policy,
2011. [Summary] [Full Report] (View)

Fransoo R, Martens P, The Need to Know Team, Prior H, Burchill C, Koseva I, Bailly A, Allegro E.
The 2013 RHA Indicators Atlas.
Winnipeg, MB:
Manitoba Centre for Health Policy,
2013. [Summary] [Full Report] [Supplements/Data extras] (View)