Fathy Shehatto (asker) Apr 26, 2012:

To Charles and Tony Yes, you are right. the word "age" is an inadvertent insertion and this caused the confusion. Text should be "ca. 20 kg Body weight".. I will contact the client in this regard. Thank you.

Tony M Apr 25, 2012:

I agree with Charles D. Although we can 'invent' what it might mean, the inadvertent insertion of a superfluous 'age' does seem a much more likely scenario.

Charles Davis Apr 25, 2012:

@Fathy Check your text carefully to make sure it reads "ca. age 20 kg" and not "ca. 20 kg". The latter is more likely and occurs in several places (I have found no instance of "ca. age 20 kg"):

"Pediatric population:
Children from 4 years of age (ca. 20 kg body weight) and older"
http://www.septodont.co.uk/sites/default/files/Scandonest 3 ...
The same phrase is used for this product here:
http://www.lakemedelsverket.se/SPC_PIL/Pdf/enhumspc/Scandone...
http://www.docstoc.com/docs/100429156/Scandonest-solution-fo...

The same phrase is used here in relation to a different medication:
"Children from 4 years of age (ca.20kg body weight) and older"
http://db.cbg-meb.nl/veegactie/nlvert/Mepivacain-August2010....

If that is what your document says, it simply means "about 20 kg", of course. In that case, it would mean that the age of 4 years is firm and the minimum weight indicated is approximate.

Fathy Shehatto (asker) Apr 25, 2012:

Now clear! Thank you Tony for this valuable input!

Tony M Apr 25, 2012:

ca. As discussed before in these pages, ca. is often an abbreviation for 'circa', meaning approximately.

I am not in any way a medical specialist, but I would imagine it would mean that the age of 4 yrs quoted is approximate, and what is really important is the weight of 20kg; in other words, a strapping 3½-year-old weighing in at 22kg would be OK, whereas a skinny kid of 5 would not be good if they only weighed 18kg.