Background-Despite the wealth of evidence linking low income to ill health, there is little information from randomised studies on how much and how quickly these risks can be reversed by improvements in income.
To conduct a systematic review of randomised studies of income supplementation, with particular reference to health outcomes.
Design-Extensive searches of electronic databases and contact with previous authors.
As well as searching for trials that were specifically designed to assess the effects of increased income, studies of winners and losers of lotteries were also sought : if winning is purely chance, such studies are, in effect, randomised trials of increased income.
Ten relevant studies were identified, all conducted in North America, mostly in the late 1960s and 1970s.
Five trials were designed to assess the effects of income supplementation on workforce participation and randomised a total of 10 000 families to 3-5 years of various combinations of minimum income guarantees and reduced tax rates.
Two trials were designed to assess re-offending rates in recently released prisoners and randomised a total of 2400 people to 3-6 months of benefits.
One trial was designed to assess housing allowances and randomised 3500 families to three years of income supplements.
One trial assessed the health effects of 12 months of income supplementation in 54 people with severe mental illness. (...)
Mots-clés Pascal : Statut socioéconomique, Revenu, Faible, Santé, Aide financière, Pronostic, Facteur risque, Prévention, Evaluation, Homme, Revue bibliographique, Epidémiologie, Randomisation, Santé physique
Mots-clés Pascal anglais : Socioeconomic status, Tempering, Low, Health, Financial assistance, Prognosis, Risk factor, Prevention, Evaluation, Human, Bibliographic review, Epidemiology, Randomization
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0503378
Code Inist : 002B30A03C. Création : 22/03/2000.