Delayed Ego Strength Development in Opioid Dependent Adolescents and Young Adults

Table 3

Multivariate linear regression model predicting total Psychological Inventory of Ego Strength (PIES) score.

Predictor	Model estimate	95% confidence limits	value
Model intercept	150.30	65.96 to 234.65	<0.001
Opioid dependent group; Control group	−26.42; Reference	−40.36 to −12.49; —	<0.001; —
SCL_GSI^1	−27.96	−37.93 to −17.99	<0.001
Intelligence^2	0.62	0.11 to 1.13	0.018
Age	4.37	0.45 to 8.30	0.030
Female gender; Male gender	−4.34; Reference	−17.94 to 9.26; —	0.527; —

Symptom Checklist-90, Global Severity Index.
Total intelligence measured by the Kaufman Brief Intelligence Test, Second Edition.