Skip to main content
. Author manuscript; available in PMC: 2019 Oct 1.
Published in final edited form as: Am J Psychiatry. 2018 Mar 21;175(10):1010–1021. doi: 10.1176/appi.ajp.2018.17070777

Table 3.

Zero-Inflated Poisson Regression Models of Alcohol Use (≥5 Drinks) Frequency Categories by Individual Subject Intercepts and Slopes from Multilevel Linear Models (MLM) of Orbital Frontal Cortex (OFC) Volume Residuals and OFC Thickness by Time-Varying CDI-C Anhedonia (N=135)

Estimate SE t p
Zero-inflated: alcohol abstinence
 Intercept 8.0334 5.3138 1.51 0.1306
 Intercept from MLM of OFC volume residuals −0.2931 0.2261 −1.30 0.1949
 Caucasian race 1.3022 0.8949 1.46 0.1456
 Male gender −0.4264 0.7879 −0.54 0.5884
 Age at last assessment −0.5672 0.3407 −1.66 0.0959
Continuous: frequency of use
 Intercept −3.1602 2.4822 −1.27 0.2030
 Intercept from MLM of OFC volume residuals −0.2063 0.0705 −2.93 0.0034
 Caucasian race −0.0643 0.3450 −0.19 0.8521
 Male gender 0.2422 0.3298 0.73 0.4628
 Age at last assessment 0.1944 0.1529 1.27 0.2037

Zero-inflated: alcohol abstinence
 Intercept 8.5058 4.7860 1.78 0.0755
 Slope from MLM of OFC volume residuals 7.5032 4.1092 1.83 0.0679
 Caucasian race 0.2992 0.6811 0.44 0.6604
 Male gender 0.0636 0.7470 0.09 0.9322
 Age at last assessment −0.5182 0.3036 −1.71 0.0879
Continuous: frequency of use
 Intercept −3.0709 2.3429 −1.31 0.1900
 Slope from MLM of OFC volume residuals 1.0316 1.4191 0.73 0.4673
 Caucasian race −0.5545 0.3014 −1.84 0.0658
 Male gender 0.5337 0.3106 1.72 0.0858
 Age at last assessment 0.2057 0.1425 1.44 0.1487

Zero-inflated: alcohol abstinence
 Intercept 22.8310 13.4559 1.70 0.0897
 Intercept from MLM of OFC thickness −1.5359 1.4005 −1.10 0.2728
 Caucasian race 0.6745 0.9768 0.69 0.4899
 Male gender −0.9416 1.1661 −0.81 0.4194
 Age at last assessment −0.4434 0.4822 −0.92 0.3578
Continuous: frequency of use
 Intercept 12.2404 4.1696 2.94 0.0033
 Intercept from MLM of OFC thickness −1.5851 0.3743 −4.23 <0.0001
 Caucasian race −0.4532 0.2956 −1.53 0.1252
 Male gender 0.1746 0.3350 0.52 0.6021
 Age at last assessment 0.3061 0.1617 1.89 0.0583

Zero-inflated: alcohol abstinence
 Intercept 3.1761 14.7041 0.22 0.8290
 Slope from MLM of OFC thickness −36.9453 76.1419 −0.49 0.6275
 Caucasian race 1.1750 1.5443 0.76 0.4467
 Male gender −0.3272 1.2195 −0.27 0.7884
 Age at last assessment −0.6618 0.4954 −1.34 0.1816
Continuous: frequency of use
 Intercept −9.3125 4.5857 −2.03 0.0423
 Slope from MLM of OFC thickness −33.4619 12.0919 −2.77 0.0057
 Caucasian race −0.2361 0.3057 −0.77 0.4400
 Male gender 0.3532 0.3628 0.97 0.3302
 Age at last assessment 0.2399 0.1890 1.27 0.2042