A key part of this is the establishment of quality childcare centres and preschool services (Sojo, 2011). Another consideration must be the different degrees of dependence caused by fortuitous events that cause disability (which may be genetic or the result of an accident or act of violence, among others) or by the ageing process. Degrees of dependence are also affected by unequal socioeconomic conditions, since deficits in nutrition, health and many other areas throughout life translate sooner or later into heavier dependency.