Description Usage Format Source References Examples
Data from University of Massachusetts AIDS Research Unit IMPACT study, a medical study performed in the US in the early 90' s. The study aimed to evaluate two different treatments for drug addiction.
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A data frame with 575 observations on the following 9 variables:
ID
Identification Code
AGE
Age at enrollment
BECK
Back depression score
IVHX
IV drug use history at admission (1=never, 2=previous, 3=recent)
NDRUGTX
number of prior treatments
RACE
subjects race (0 = white, 1 = other)
TREAT
treatment duration (0 = short, 1 = long)
SITE
treatment site (0 = A, 1 = B)
DFREE
Remained drug free (1 = Yes, 0 = No) (response)
Hosmer and Lemeshow, Applied Logistic Regression (2nd Ed), p28
Hosmer, D.W. and Lemeshow, S. (2000), Applied Logistic Regression (2nd Ed), Wiley, New York.
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