A conversation with the pediatrician’s nurse yesterday…
Nurse: Here are his percentiles (handing me a sheet with my son’s height, weight, head size and corresponding percentiles for his 9 month check up)
Me: Are these the percentiles based on a 9 month old? Because he’s over 10 months now. He was sick twice when he was 9 months so we’re late
Nurse: No. Those percentiles are based on a 9 month old
Me: But he’s not 9 months. Why plot them for the wrong age?
Nurse: Because this is his 9 month check up
Me: But he’s not 9 months old. Doesn’t being almost two months older make a difference?
Nurse: Yes, it does
Me: Then would you figure them for his actual age, please?
Nurse: I can’t. It’s his 9 month check up
And then my head exploded. I’m typing this from the great beyond.
(The doctor did his stats for 10.5 months and it turns out he made a semi-major jump down from 97th to 85th percentile in weight but not height or head size so it was good that I got the right info.)