Poverty
The poverty line threshold of $1.90 per day, as set by the World Bank, is controversial. Each nation has its own threshold for absolute poverty line; in the United States, for example, the absolute poverty line was US$15.15 per day in 2010 (US$22,000 per year for a family of four), while in India it was US$1.0 per day and in China the absolute poverty line was US$0.55 per day, each on PPP basis in 2010. These different poverty lines make data comparison between each nation's official reports qualitatively difficult. Some scholars argue that the World Bank method sets the bar too high, others argue it is low. Still others suggest that poverty line misleads as it measures everyone below the poverty line the same, when in reality someone living on $1.20 per day is in a different state of poverty than someone living on $0.20 per day. In other words, the depth and intensity of poverty varies across the world and in any regional populations, and $1.25 per day poverty line and head counts are inadequate measures.
Single parent
Single mothers are one of the poorest populations, many of them vulnerable to homelessness. In the United States, nearly half (45%) of single mothers and their children live below the poverty line, also referred to as the poverty threshold. They lack the financial resources to support their children when the birth father is unresponsive. Many seek assistance through living with another adult, perhaps a relative, fictive kin, or significant other, and divorced mothers who remarry have fewer financial struggles than unmarried single mothers, who cannot work for longer periods of time without shirking their child-caring responsibilities. Unmarried mothers are thus more likely to cohabit with another adult. Many of the jobs available to women are not sufficient and do not bring in enough income for the mother and her children; this is common in the United States and other countries all over the world.