I have been using the package for my survey on school age children in which some of them are more than 120cm (give me a problem on weight-for -height. I also have a problem with Weight-for-age since some of my ages are above 120 months.
Is there a way to go around this? I know the package is restricted to those ranges.
Thank you.
Feedback from Mark
The 'zscorer' package is limited by the ranges for which reference values are a available. For W/H the upper limit is 120 cm. For W/A the upper limit is 120 months.
The 'zscorer, package uses the WHO Child Growth Standards and the WHO Growth References for children and adolescents. If you have reference data for wider ranges then that can be added quite easily.
We have (e.g.) recently added MUAC/A z-scores as described in:
Mramba L, Ngari M, Mwangome M, Muchai L, Bauni E, Walker AS, et al.,
A growth reference for mid upper arm circumference for age among
school age children and adolescents, and validation for mortality:
growth curve construction and longitudinal cohort study. BMJ. 2017
extending the upper limit to 228 months. This did not take very much work. The most work was in getting the reference data into a format compatible with that expected by internal functions of the 'zscorer' library. It is a simple format but there may be a lot of data to import.
It may be possible to use the CDC 2000 reference which has (e.g.) 240 month as the upper limit for W/A with data in close to the required format. You may want to use CDC software to use teh CDC reference.
We can probably help with adding reference datasets.
Issue raised on en-net on 4 December 2020 (see https://www.en-net.org/question/3787.aspx)
Message from Halfan Ngowo:
Hi There,
I have been using the package for my survey on school age children in which some of them are more than 120cm (give me a problem on weight-for -height. I also have a problem with Weight-for-age since some of my ages are above 120 months.
Is there a way to go around this? I know the package is restricted to those ranges.
Thank you.
Feedback from Mark
The 'zscorer' package is limited by the ranges for which reference values are a available. For W/H the upper limit is 120 cm. For W/A the upper limit is 120 months.
The 'zscorer, package uses the WHO Child Growth Standards and the WHO Growth References for children and adolescents. If you have reference data for wider ranges then that can be added quite easily.
We have (e.g.) recently added MUAC/A z-scores as described in:
extending the upper limit to 228 months. This did not take very much work. The most work was in getting the reference data into a format compatible with that expected by internal functions of the 'zscorer' library. It is a simple format but there may be a lot of data to import.
It may be possible to use the CDC 2000 reference which has (e.g.) 240 month as the upper limit for W/A with data in close to the required format. You may want to use CDC software to use teh CDC reference.
We can probably help with adding reference datasets.