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. Author manuscript; available in PMC: 2020 Mar 9.
Published in final edited form as: Nat Hum Behav. 2019 May 13;3(7):671–677. doi: 10.1038/s41562-019-0604-8

Table 2.

Effects of prison vs. probation sentence on violent crime, by time since release

Entire Sample
No Baseline Violent Offense
Baseline Violent Offense
Prison vs. Probation Change in Probability Sample size Prison vs. Probation Change in Probability Sample size Prison vs. Probation Change in Probability Sample size
A. Outcome: Ever Arrested for Violent Crime
1 year since release −0.005 106,926 −0.008 78,856 −0.013 28,070
(−0.025 , 0.014) (−0.033 , 0.018) (−0.041 , 0.015)
p=0.591 p=0.547 p=0.350
3 years since release 0.006 104,605 −0.003 78,425 −0.020 26,180
(−0.024 , 0.035) (−0.041 , 0.036) (−0.062 , 0.021)
p=0.706 p=0.888 p=0.337
5 years since release 0.012 100,445 0.036 76,748 −0.042 23,697
(−0.028 , 0.053) (−0.017 , 0.089) (−0.094 , 0.010)
p=0.545 p=0.180 p=0.116
B. Outcome: Ever Convicted of Violent Crime
1 year since release 0.001 108,404 0.006 79,094 −0.005 29,310
(−0.010 , 0.012) (−0.007 , 0.019) (−0.022 , 0.012)
p=0.822 p=0.380 p=0.557
3 years since release 0.004 107,425 −0.003 78,949 −0.023 28,476
(−0.015 , 0.024) (−0.026 , 0.021) (−0.052 , 0.006)
p=0.655 p=0.832 p=0.123
5 years since release 0.017 105,799 0.002 78,667 −0.017 27,132
(−0.007 , 0.040) (−0.027 , 0.032) (−0.051 , 0.017)
p=0.157 p=0.870 p=0.339

Each cell contains one unstandardized coefficient from a different 2-Stage Least Squares regression model, the coefficient’s 95% confidence interval, and its p-value (two tailed test). Coefficients represent the change in the probability of one or more arrests or convictions for a violent crime during follow-up due to prison vs. probation sentence at baseline, holding sentence length constant at 24 months. Full model results, model fit statistics, and coefficient z-statistics in Supplementary Table 8.