Negative testable consequences? How about not being able to buy basic goods like food? I believe that's quite testable, however cross-region comparison based so

Negative testable consequences? How about not being able to buy basic goods like food? I believe that's quite testable, however cross-region comparison based solely on income is meaningless in this case as the cost of basic goods will vary. (http://www.novinite.com/articles/152387/20+of+Bulgarian+Households+Live+below+Poverty+Line http://www.novinite.com/articles/152387/20+of+Bulgarian+Hous...)