National Child Measurement Programme, England - 2017/18 School Year [PAS]

Missing 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.

Imprecise data

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.}