Question about transplants and the final hair loss pattern

Hi doctor, I wanted to ask if a man in his 20s or 30s with a good donor were to get a hair transplant of 6000 to 7000 grafts, would all of the grafts stay until his 80s, or would some thin due to age? Another question is, is there an age when you can tell what the final hair loss pattern will be? 

The final pattern is unknown, but a good surgeon can make a good, educated guess by age 26 if you have already started your balding process.  I have transplanted men in the early 1990s, and some have seen me professionally with the transplanted hair still present.  Most of the men past 70, found that the hair became thinner, a condition we see frequently in many men of that age who were never transplanted.  This is a condition called Age-Related Thinning.  For more information read here:  https://baldingblog.com/misunderstanding-on-the-relationships-between-recipient-and-donor-area-densities-in-transplantation/