I am in northern Italy - but I'm not Italian, I was born in the UK.
The AVERAGE means there are a lot of people younger to balance out the relatively large nos who are older.
I don't think your doctor knows a lot about PMR: the guidelines say the lowest effective dose in the range 12.5-25mg/day, NEVER less than 12.5mg. They also say the dose should be taken in one go early in the morning to achieve the best antiinflammatory effect. He should also have warned you about the possibility of developing GCA, giant cell arteritis, which is the "big brother" of PMR. It is increasingly being accepted they are the same basic disorder but at different places on the spectrum and about 20% of patients with PMR symptoms go on to display signs of GCA.
Sorry I can't give you the direct link (it will go for moderation) but Google this
"The spectrum of giant cell arteritis and polymyalgia rheumatica: revisiting the concept of the disease by Christian Dejaco et al"
for a fairly easy to read article by a group of top rheumies in the field. In the first link (should be the ncbi nlm nih gov one with dots in the appropriate places), below the Abstract and keywords you will see a link that should take you to the full text, free).
I saw him the other day - and we agreed that I almost certainly sit in the middle where all 3 overlap in Fig 1! Which I have been saying for a long time... I was dx'd at just 57 - but had had symptoms for over 5 years that no-one had recognised. I had the typical PMR stuff - but I also had had jaw pain and a sore scalp which lasted a few weeks and then disappeared and also thigh muscle claudication. I had a constant sore throat and tickly cough - that had actually been the main reason for seeing the doctor, I felt as if I had a chest infection but it never came to anything. There was nothing to see. I never lost weight (if only) but that is more commonly seen in GCA than PMR.
Anyway, GCA is a problem because it can also affect the blood supply to the optic nerve and so affect your vision - which is why it is important to be aware of it. I don't want to scare you - but do be aware of increasing symptoms and if you have any visual symptoms please contact your doctor as an emergency.
This is a link to our resources post with a load of links to reliable information and websites where you can get good info about both PMR and GCA.
https://patient.info/forums/discuss/pmr-gca-website-addresses-and-resources-35316
I'm sure a lot of your questions will get answers in there somewhere - if they don't, come back and ask them!