Anne Line Bretteville-Jensen and Liana Jacobi, "Climbing the Drug 
Staircase: A Bayesian Analysis of the Initiation of Hard Drug Use," 
Journal of Applied Econometrics, Vol. 26, No. 7, 2011, pp. 1157-1186.

The data used in this paper are the property of the Norwegian Institute 
for Alcohol and Drug Research (SIRUS) who do not permit open access.
Hence the data cannot be lodged here.

Enquiries concerning access should be addressed to sirus@sirus.no or

         SIRUS
         Post Box 565 Sentrum
         N-0105 Oslo
         Norway

The data set is part of an ongoing household survey which is conducted 
every four years. Data from the 2002 and 2006 surveys are used in the 
present study.

A Stata do-file used for creating the variables is enclosed. It is 
called bjj.do, and it is zipped in the file bjj-program.zip. Unix/Linux 
users should use "unzip -a".

The variables are based on the following variables from the original 
data set:

Dependent variables: cannabis dummy (v093); hard drug dummy (v094, v095 
[amphetamine], v096 [ecstasy], v097, v098 [cocaine], v101, v102 
[heroin])

Explanatory variables: v005 (male); v006 (age); v042 (childhood problem 
with parents); v043 (childhood problem with school); v044 (childhood 
problem with friends); v045 (childhood problem with police); v039 (leave 
school after 10 years); v168, v170, v172 (alcohol use before age 13); 
v149 (smoker); v046 (non-western background); v008 (living in the 
country side); v054 (obtain cannabis); v055, v056, v057, v060 (obtain 
hard drugs); v005 (living in Oslo).

In addition, information on drug prices and seizures have been included 
and the information is found in the do-file.

  Anne Line Bretteville-Jensen
  Norwegian Institute of Alcohol and Drug Research (SIRUS)
  Post Box 565 Sentrum
  N-0105 Oslo Norway
  alb [AT] sirus.no