Like Bethsheba I can not interpret your results.. but I can share a summary of my families and what we are doing now.
Hypopnea - my husband has sleep apnea as a result of that. He breathes too shallow while sleeping and thus the oxygen in his blood drops as a result. His treatment is sleeping on a CPAP. He is doing fine now. He was having 30+ events an hour this way.
OSA - ME. I have an elongated pallet, restricted airways, funky sinus structure.. had enlarged tonsils and adnoids. I was stopping breathing (apnea events) many times a minute.. let us not get into totals

. My apnea hypopnea rating was 60+. I sleep on a CPAP and am doing just fine. Had sinus surgery and a tonsillectomy and adenoidectomy. This reduced me to mild sleep apnea.. but I still need my CPAP. You would have to fight me for it if you wanted to take it away.
My son got the best of both of us. He is five now. Was 4 when diagnosed after much research and arguing from me and a year of failure to thrive/grow because his pediatricians were telling me children don't have sleep apnea. The were SO WRONG! Sorry memory vent. He has hyponea and obstructive sleep apnea. His hypopnea rating was 30 events and hour and his apnea was 37 events an hour his rating/index was 30+ which is severe sleep apnea in a child that young. Treatment he sleeps on his CPAP 12 hours a day. He is a changed child. It has been a miracle treatment.
So don't worry. The second study is a titration study. They will do the same wire rigging, and just add a CPAP to you. You will sleep as the computer continues to adjust the air pressure of your mask. The computer will stop when you no longer have more than 5 events an hour and that will be the computer determined sleep pressure setting recommended. Look at your notes and if you still have an event or two you might want to ask for a level one higher. I currently sleep on a setting 4 higher than prescribed by the computer.. because that is what it takes for me to sleep through the night. You will be fine and try out every mask they have at the sleep center. GO for the one that fits you best. I am a mouth breather and thus i go for a full face mask. My husband as well. My son.. he is lucky and uses a gel nasal mask. That was so comfortable.. as long as you can keep you mouth shut.
Good luck.
MG