Evaluations of Progresa/Oportunidades indicate that its integrated approach has been highly successful, with large improvements in the well-being of participants. Malnutrition has measurably declined; family use of health care, including prenatal care, has increased, and child health indicators have improved; school attendance is up significantly, and the dropout rate has declined substantially, especially in the so-called transition grades six through nine, when children either get launched toward high school or drop out. In general terms, the research showed that Progresa/Oportunidades increased by some 20% the number of children who stay in school rather than drop out just before high school. Child labor decreased by about 15%. At first, there were some concerns that adults might work less when receiving the transfers, but the evidence is that no work reduction has occurred. Several of the most statistically reliable studies and their research methods and findings are reviewed in Emmanuel Skoufias's 2005 IFPRI report, PROGRESA and Its Impacts on the Welfare of Rural Households in Mexico. Other key research reports are listed among the sources at the end of this case study