I'm not sure if HP does or not, but I'd lean towards yes because of the earrings.
Speed doesn't really need a second address, maybe at one point early on they were considering having speed grow on a 1-99 scale. As for the rest, the stats are recalculated every time you level. You know that formula I've got listed in Warrior Workshop? Growth * Previous Level + Growth 2. The growth 2 value is what you write to for permanent stat changes.
HP and MP have a simpler system, where you get a fixed amount in up to four level ranges. They wouldn't need fresh calculations, but I need to see how the game gives bonus HP from the earrings. More importantly, I need to see how the game removes bonus HP from the earrings.
I made a mess of my files recently, so I won't be able to get to this until that's sorted. For a quick test, give yourself bonus HP at level 1, then level up and equip/unequip an earring. If your HP stays correct through the process, it's good, but if something screws up there's another address I need to find.