"Child dependency is an important variable in determining the composition of families and households. Census and many other surveys (eg Household Labour Force Survey, New Zealand Income Survey, and Household Economic Survey) use the child dependency classifications to derive information about dependent and non-dependent children. Three classifications are included in the scope of this standard: dependent child under 18 indicator classification; dependent young person indicator classification; child dependency status classification.
The 'Dependent child under 18 indicator' and 'Dependent young person indicator' classifications are flat classifications each with three categories.
The standard classification of child dependency status (master version) is a hierarchical classification of three levels. Level 1 of the classification has two categories, level 2 has nine categories, and level 3 has 15 categories.
The alternate version of the standard classification of child dependency status is a hierarchical classification of two levels. Level 1 of the classification has four categories and level 2 has seven categories."