The 2012 SIGI comprises 14 unique variables, grouped into five sub-indices: Discriminatory Family Code, Restricted Physical Integrity, Son Bias, Restricted Resources and Entitlements, and Restricted Civil Liberties. While women and men appear to have the same rights to vote and stand for election in Viet Nam, female representation at national and local levels of government is much lower than male. A number of NGOs also work in the area of women's rights, but tend to operate under considerable restrictions, which limit their capacity to influence public policy and speak out against rights abuses.