Maybe you missed these ones:
Edited the original reply, sorry!
Does the one more baby also appear in the spreadsheet? No --> does he/ she appear in another spreadsheet? Should he/she be included in the spreadsheet? Was he mistakenly not included?
No to allNew questions:
was the spreadsheet where the hundreds of babies were, updated?
Irrel If so, were the babies followed from their birth?
No guess that if they were in a Uni/lab spreadsheet, the researchers were interested on something about the babies right?
Yes Were the babies randomly selected?
They were selected from a database based on certain criteria, no details relevant Were researchers interested in a relevant phase of their birth?
No Were the data about them collected: as soon as the babies were born? after a year or two from their birth?
When they were around a year old - not really relevant though when something happened? spermatozoon relevant? assisted fertilization? IVF? Planned parenthood?
No to allIf the spreadsheet was updated: were new babies added? If so, in 2017? Later? Or the same babies were kept and new observations on them noted/updated in the spreadsheet?
Irrel to allDid they (all babies + 1) have something in common? The ones in the text/spreadsheet, yes, the extra one, no --> was the extra one someone you knew?
Yes Did they (all but the one) share the age and the fact of having been selected for an experiment?
Yes Is medicine/health care involved here?
No If not, did they share something relevantly having the same numerical value on the spreadsheet? Something measurable? (e.g. weight? the time at which they were born?) something concerning the way they born? Their parents? genetic? Technology? Exposure to something? The place of birth?
No/irrel to all, the only relevant characteristic that they share is their participation in the experiment