- Deprivation gap for obesity – Reception
- Deprivation gap for obesity – Year 6
- Deprivation gap for severe obesity – Reception
- Deprivation gap for severe obesity – Year 6
- ONS Area Classification
- Data Quality - Coverage
- Data Quality – Missing and imprecise data
- Data Quality – Timeliness
- Other data sources
- Author, Copyright and Licensing
Data Quality – Missing and imprecise data
The proportion of missing data items has improved over time although it still remains quite high for NHS number and ethnicity. 27 LAs had over 25% of records with missing NHS numbers and nine LAs had more than 25% of records without an ethnicity code.
By chance, 10% of height and weight measurements would be expected to be whole numbers. However, there is some evidence of LAs rounding heights to whole numbers as nationally 16% of heights were whole numbers in 2017/18. This was over 30% for two LAs.
1. NHS number has only been collected since 2013/14.
2. For 2017/18 data at local authority level: Table 8, National Child Measurement Programme, England, 2017/18 school year.