long-term health and environmental threats. Globalization is also accompanied with migration, displacement and dispossession, and this often increased vulnerability of marginalized communities and groups, which negatively shaped their prospects for globalization and emancipation and widened inequality at the meantime. Efforts are still needed to improve the policy measures for orderly, safe, regular and responsible migration and mobility. There are also association between inequality and mental and physical health in various forms, such as status anxiety/competition, social capital, social embeddedness and cohesion. Measuring inequality Measuring inequality in its individual forms is a crucial component in order to reduce inequality within and among countries. The Gini coefficient is the most frequently used measurement of socioeconomic inequality as it can significantly show the income and wealth distribution within and among countries. Measuring social inequality often involve more complex factors and techniques, such as measuring the social group in the quality of education received and their accessibility to higher education, their social status, marital status, and other factors that associated with inequality such as urban or rural location. Targets, indicators and progress The UN has defined 10 targets and 11 indicators for SDG 10. Targets specify the goals and Indicators represent the metrics by which the world aims to track whether these Targets are achieved. SDG 10 covers issues including reducing income inequalities (10.1), promoting universal social, economic and political inclusion (10.2), ensure equal opportunities and end discrimination (10.3), adopt fiscal and social policies that promotes equality (10.4), improved regulation of global financial markets and institutions (10.5), enhanced representation for developing countries in financial institutions (10.6), responsible and well-managed migration policies (10.7), special and differential treatment for developing countries (10.a), encourage development assistance and investment in least developed countries (10.b) and reduced transaction costs for migrant remittances (10.c). Target 10.1: Reduce income inequalities The full title of Target 10.1 is: "By 2030, progressively achieve and sustain income growth of the bottom 40 per cent of the population at a rate higher than the national average". Target 10.1 has one indicator: Indicator 10.1.1 is the "Growth rates of household expenditure or income per capita among the bottom 40 per cent of the population and the total population". Relative poverty and inequality is the share of people living below 50 per cent of the median income level. Data from 110 high- and low-income countries showed that the median country had 14 per cent of the population