What are all the factors which affect escape chance?

According to the question "What are all the factors which affect catch chance?" I would like to know what influences a Pokémon to escape.

Example: I do not know if this is a subjective cognition, but I think that Abra has a much higher escape rate than other Pokémon (the same like in the Pokemon Series).

Proof:

Seen: 13 Times
Caught: Only 7 Times ( where 3 are from eggs)

So the bilance would be 10-4 without eggs, what would be a catch rate of less than 50% (no statistical significance of course).

What are other factors except the Pokémon itself?

pokemon-go

Best Answer

As you can see here: https://gist.github.com/anonymous/077d6dea82d58b8febde54ae9729b1bf#file-game_master_v0_1-protobuf-L8600 there is a variable in the pokemon that indicates that.

TemplateId: "V0001_POKEMON_BULBASAUR"  
  Pokemon {  
    UniqueId: V0001_POKEMON_BULBASAUR  
    }
    Encounter {
      BaseCaptureRate: 0.16  
      BaseFleeRate: 0.1  
      JumpTimeS: 1.15  
      AttackTimerS: 29  
    }