Principal stratum

Name

Survival status
under treatment arm

Survival status
under control arm

(S₁, S₀) = (1, 1)

Always-survivor

Alive

Alive

(S₁, S₀) = (1, 0)

Complier

Alive

Dead

(S₁, S₀) = (0, 1)

Defier

Dead

Alive

(S₁, S₀) = (0, 0)

Never-survivor

Dead

Dead