Table 4. Post Hoc Results for Statistically Significant Baseline Characteristics in Table 1

Characteristic	Post Hoc P Value
Characteristic	Substantial/Severe vs Low	Substantial/Severe vs Intermediate	Intermediate vs Low
Demographics
Age^*	.01	.04	ns
Race^{^†}	.02	ns	.05
Marital status^{^†}	ns	ns	ns
Education^{^†}	<.001	ns	.04
Employment status^{^†}	.002	ns	ns
Homeless in shelter or on the street ≥1 night in the past 90 days^{^†}	<.001	<.001	<.001
Substance use/treatment
ASI days most frequently used drug^*	.02	ns	ns
ASI drug use composite score^{^‡}	<.001	<.001	<.001
ASI drug use, any in the past 30 days^{^†}
Marijuana	<.001	.001	<.001
Stimulants	<.001	<.001	<.001
Cocaine	<.001	<.001	<.001
Amphetamines	<.001	.005	.10
Opiates	<.001	.02	<.001
Heroin	<.001	<.001	<.001
Methadone and other opiates	<.001	ns	<.001
Sedatives/hypnotics/tranquilizers	<.001	ns	.005
Other drugs	.019	ns	ns
≥2 Drugs used in the past 30 days^{^†}	<.001	<.001	<.001
Intravenous drug use in past 30 days^{^†}	<.001	<.001	ns
Goal of total abstinence from drugs^{^†}	<.001	<.001	<.001
ASI alcohol use composite score^{^‡}	<.001	<.001	.001
Alcohol use, any in the past 30 days^{^†}	.05	ns	ns
Nicotine use, any in the past 30 days^{^†}	<.001	ns	.002
CD treatment services^{^†}
Admitted to CD treatment	<.001	<.001	.009
Detoxification (not followed by CD treatment)	<.001	<.001	ns
Other Psychosocial
≥1 Arrest for felony or gross misdemeanor ^{^†}	<.001	.008	.007
HIV risk-taking score^{^‡}	<.001	.002	ns
ASI family/social composite score^{^‡}	<.001	.02	.01

↵* Data are Tukey-adjusted P values.
↵† Data are Bonferroni-adjusted P values.
↵‡ Data are Games-Howell–adjusted P values.
ASI, Addiction Severity Index Lite; CD, chemical dependency; HIV, human immunodeficiency virus; ns, not significant.