Survey on Homeless Persons Relative sampling errors Sampling errors relating to the homeless population by nationality and age group Units: percentages ;Total;18 to 29 years;30 to 44 years;45 to 64 years;More than 64 years; Total;2.25;5.29;4.48;4.76;14.66; Spanish;3.73;17.03;6.51;5.64;10.64; Foreign;3.51;7.30;6.47;9.53;34.85; Notes: Source: National Statistics Institute