Question

In: Statistics and Probability

Should we give heroin addicts heroin to cut crime? A recent article in the BBC (...

Should we give heroin addicts heroin to cut crime?

A recent article in the BBC ( Durham Police to give drug addicts heroin in bid to cut crime (Links to an external site.)) it was suggested that heroin addicts be given the Class A drug in supervised "shooting galleries" to Durham England addicts in a bid to tackle drug-related crime.

"Durham Police is to become the first force in the country (UK) to introduce a scheme in which users are treated with diamorphine - medical grade heroin.
Ron Hogg, County Durham's Police, Crime and Victims' Commissioner, says such treatment lowers offending levels.
Opponents claim trials have not shown significant benefits.
Mr Hogg told BBC Newcastle existing national policies had not been effective and pointed to six-year trials in Darlington, London and Brighton which he said had helped wean users off the drug.
Addicts were given the opiate in consumption rooms, often referred to as "shooting galleries", supervised by medical professionals.
"It got them back into a normal life and it cut crime," he said.
"We saw health benefits for the individuals, we saw needles being taken off the street, so there's an awful lot of evidence both in the UK and across the world that such schemes do actually work.
"All police and crime commissioners spend a lot of money on what we call diversionary work - community projects and youth offending schemes - because we know this will stop people committing crime.
"This is just an extension of that rationale. The controversiality is because it's drugs."
'Not unusual'
Mr Hogg said the UK had the highest rate of heroin, cocaine and ecstasy use across the European Union with drug-induced deaths totalling 45 people per million compared with 17 per million in the EU.
Aiming to introduce the scheme "by the end of this year", he added the force's public health partners were working out the cost of administering the drug to users twice-daily.
He previously mooted such a move in 2013.

"If we go back to the 1960s, doctors used to prescribe heroin as a means of treating someone back to recovery. It's not that unusual," he said.
"We've got to consider the Misuse of Drugs Act has been in since 1971 and we haven't arrested the way out of the problem, have we?"
A Home Office spokesman said there was evidence "supervised use of [diamorphine] in a medical environment as part of a treatment plan can help keep patients in treatment and out of criminal behaviour".
However, David Raynes of the National Drug Prevention Alliance, warned the move "will not stop addicts being addicts".
"It doesn't stop people using street drugs," he said.
"It may reduce crime marginally, but it doesn't reduce crime permanently."

Discussion Question

Working together as a group, design a study to address whether this method is effective or not in reducing crime due to heroin addiction. Ron Hogg of  County Durham's Police believes it works while  David Raynes of the National Drug Prevention Alliance is skeptical. Your job is to help settle the argument using a statistical study. You will need to address the following in your write up:

  1. What is the population of interest?
  2. What are the null and alternate hypotheses of your study?
  3. What data type will you be collecting in this study (numerical or categorical)?
  4. How would you collect the data needed to decide which hypothesis to support?
  5. How would you make sure the data collected is representative of the population of interest and not biased?
  6. Specifically, what tools would you use to analyze the data? You need to give the names of any plots/graphs that would be useful and the type of hypothesis test that would be used to settle the argument between Mr. Hogg and Mr. Raynes.
  7. Based on what hypothesis test you selected in part 6, what assumptions need to be check prior to using said test?
  8. Let's assume your study resulted in the data being statistically significant. Which hypotheses would have been supported? Give a possible p-value for this result. If an error had occurred, which type (Type I or Type II) could it have been?
  9. Let's assume your study resulted in the data NOT being statistically significant. Which hypotheses would have been supported? Give a possible p -value for this result.  If an error had occurred, which type (Type I or Type II) could it have been?

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