Calculates extra values

[SarvenazShahin]

Hello,

Thank you so much for the great and easy-to-use package for calculating z-scores. I faced a small issue while using who_wtkg2zscore() to calculate the z-scores for my weights. I was wondering if there is problem with how I use the code or something else. When I apply who_wtkg2zscore to my data, for calculating weight-for-age z-scores around age 12 month (plus and minus a few months), instead of receiving NAs, I receive a fixed value for z-scores for observations that have their sex value missing. I know that ideally, we should use the function on a data with no missing sex or weight, however, since I used it on a data with incomplete sex and depended on the function to report NAs, I faced this issue.

I would truly appreciate it if you could guide me with this issue, whether I should use only the complete cases, or this is something that can be resolved within the function.

Thank you,

Sarvenaz