Table 4

Display of Statistical Differences

Reference CategoryComparison GroupStatistical Results
Substance Use Disorder Total (n = 4,005) x̄ = 1.50, SD = 2.09No Substance Use Disorder (n = 5,664) x̄ = 1.00, SD = 1.62F = 32.30 df = 2 P < .001
Mental Illness Alone (n = 155) x̄ = 0.92, SD = 1.48
Mental Illness and Substance Use Disorder (n = 1,020) x̄ = 1.47, SD = 2.09Substance Use Disorder Total (n = 4,005) x̄ = 1.50, SD = 2.09F = 27.14 df = 3 P < .001
No Substance Use Disorder and No Mental Illness (n = 5,509) x̄ = 1.13, SD = 1.77
Mental Illness Alone (n = 155) x̄ = 0.92, SD = 1.48