Individuals held in isolation in U.S. prisons (on last count)
Estimated number of individuals held in long-term solitary in 'supermax' prisons
Approximate number of individuals held in long-term isolation in British prisons
Percentage decrease in prison violence through use of solitary
Average annual cost of keeping someone in prison
Average annual cost of keeping someone in solitary
Average size of solitary confinement cell
Average size of a parking space.
Percentage of people sentenced to solitary by a judge and jury
Percentage of people placed in solitary by corrections officials
Percentage of prison suicides that take place in isolation
Number of times more likely youth are to commit suicide in isolation
Maximum amount of time anyone has spent in solitary in the U.S.