Small Frame
From AoP Wiki
Small Frame is a possible Trait you can pick during character creation.
Positive Effect
The Trait adds +1 Agility to your character.
Negative Effect
The Trait gives enemies a +10% chance to knock you down with single shots. The way the trait works, is that if someone rolls a critical-table entry, that has the knockdown effect applied to it, they get a +10 roll (out of 100) to knock you down. This means, this +10% chance only applies to aimed shots that could knock you down to begin with AND that have a high enough of a crit roll to do so.