Battle Stats in Nioh affect how much damage the player does, how much damage he/she can take and how much Ki is consumed when blocking, etc.
Affects how much damage your weapon causes on enemies.
Affects how severely an enemy's guard is broken.
Affects how much Ki is lost when blocking an enemy attack.
Affects how much damage you take.
Resistance to guard breaks
Resistance to fire attacks.
Resistance to water attacks.
Resistance to wind attacks.
Resistance to lightning attacks.
Resistance to earth attacks.
Resistance to poison.
Resistance to Paralysis.
Resistance to the Yokai Realm. Normally, a human's Ki drains at an alarming rate in the Yokai Realm, but this resistance lessens the effect.