Appendix Three: Unknown ethnicity data
When ethnicity is recorded as ‘unknown’ in Oranga Tamariki or NZ Police data, we exclude these records when making comparisons between Māori and non-Māori in this report.
When the proportion of unknown ethnicity is above 10 percent and is therefore likely to affect the quality of data analysis, we have drawn attention to this in the report.
The data below shows the number and proportion of and with an unknown ethnicity, by level of system involvement.
| Māori | Non-Māori | Unknown ethnicity | |
|---|---|---|---|
| Tamariki and rangatahi in | 338,000 (27%) | 918,000 (73%) | |
| Had a report of concern about their safety or wellbeing | 30,600 (49%) | 22,900 (36%) | 9,150 (15%) |
| Had a report of concern that progressed to a core assessment |
17,700 (55%) | 11,900 (37%) | 2,770 (8%) |
| Had a police proceeding | 2,960 (40%) | 2,070 (28%) | 2,400 (32%) |
| Were in care | 3,440 (68%) | 1,590 (31%) | 45 (1%) |
| Were in youth justice custody | 490 (80%) | 120 (20%) |