Table 3.
Logistic Regression model in the full data set (in-sample), with problematic internet use category (moderate and severely problematic versus controls) as dependent variable.
| Variable | Estimate ± Std. Error | z value | Pr(>|z|) |
|---|---|---|---|
| Age | 0.51 ± 0.09 | 5.59 | <0.0001 |
| Gender | −0.12 ± 0.19 | −0.63 | 0.5304 |
| Race | 0.74 ± 0.19 | 3.97 | <0.0001 |
| Education | 0.71 ± 1.24 | 0.57 | 0.5681 |
| 0.69 ± 1.23 | 0.56 | 0.5773 | |
| 0.43 ± 1.23 | 0.35 | 0.7293 | |
| 0.02 ± 1.25 | 0.02 | 0.9845 | |
| ASRS | 0.52 ± 0.01 | 5.31 | <0.0001 |
| Attention impulsivity (BIS) | 0.15 ± 0.12 | 1.22 | 0.2213 |
| Motor impulsivity (BIS) | 0.37 ± 0.12 | 3.15 | 0.0016 |
| Non-planning impulsivity (BIS) | 0.05 ± 0.10 | 0.53 | 0.5981 |
| Checking compulsion (PADUA) | 0.41 ± 0.12 | 3.41 | 0.0007 |
| PADUA contamination obsessions and washing compulsions (PADUA) | −0.02 ± 0.11 | −0.17 | 0.8681 |
| PADUA dressing grooming compulsions (PADUA) | 0.16 ± 0.10 | 1.69 | 0.0904 |
| Impulses to harm self or others (PADUA) | 0.32 ± 0.08 | 4.01 | <0.0001 |
| Thoughts of harm to self or others (PADUA) | 0.11 ± 0.11 | 0.97 | 0.3305 |
ASRS – Adult ADHD Self-Report Scale (ASRS-v1.1) Symptom Checklist; BIS – Barratt Impulsiveness Scale 11; PADUA – Padua Inventory-Revised.