"It has long been the standard practice in medical testing: Give drug treatment to one group while another, the control group, goes without.
Now, New York City is applying the same methodology to assess one of its programs to prevent homelessness. Half of the test subjects — people who are behind on rent and in danger of being evicted — are being denied assistance from the program for two years, with researchers tracking them to see if they end up homeless."
This seems like an interesting article, but I'm having a little trouble parsing the post. Was there supposed to be another sentence/paragraph before the one starting "Now, NYC City . . ." that talks about where else this methodology is used? Maybe the first sentence of the article?
Previous sentence from the article added for clarity.