In general, a pension scheme will be more redistributive the larger the difference between the replacement rate of low and high pensions. Although this is a rough progressivity measure, as it does not take into account the inequality in personal earnings, the correlation coefficient between this progressivity measure and the progressivity index used for Figure 6 is 0.85. On average in the OECD, 22% of households with a disabled person receiving benefits live in poverty, compared with around 14% for other households. This gap is especially high in Australia, Ireland, Korea, the United Kingdom and the United States (OECD, 2010d).