Table 1.
Lasso coefficients for internet activities stratified by age.
| Internet activity | All (n = 1749) | 18 ≤ Age ≤ 25 (n = 1042) | 26 ≤ Age ≤ 55 (n = 592) | Age > 55 (n = 115) |
|---|---|---|---|---|
| General surfing | 2.100 | 2.400 | 1.500 | 0.590 |
| Internet gaming | 0.600 | 0.450 | 0.110 | 0.000 |
| RPG | 0.000 | 0.000 | 0.710 | 0.000 |
| Time wasters | 0.000 | 0.000 | 0.000 | 0.450 |
| Action multiplayer | 0.000 | 0.000 | 0.000 | 0.000 |
| Shopping | 1.400 | 0.840 | 1.500 | 0.000 |
| Auction websites | 0.027 | 0.000 | 0.990 | 0.230 |
| Gambling | 0.000 | 0.000 | 0.780 | 0.000 |
| Social networking | 0.460 | 0.000 | 1.300 | 0.000 |
| Sports | 0.000 | 0.000 | 0.000 | 0.000 |
| Pornography | 1.000 | 1.400 | 0.210 | 0.000 |
| Messaging | 0.000 | 0.000 | 0.110 | 0.000 |
| Streaming media | 0.000 | 0.000 | 0.000 | 1.200 |
| PADUA | 0.074 | 0.085 | 0.029 | 0.065 |
| BIS | 0.066 | 0.048 | 0.072 | 0.086 |
| ADHD Diagnosis | 1.700 | 0.350 | 3.100 | 0.000 |
| GAD diagnosis | 0.230 | 0.000 | 0.000 | 6.400 |
| Social anxiety diagnosis | 0.000 | 0.560 | 0.000 | 0.000 |
| OCD diagnosis | 0.270 | 0.000 | 0.000 | 4.300 |
Lasso - least absolute shrinkage and selection operator; RPG - Role Playing games; PADUA: Padua Inventory-Revised Checking; BIS - Barratt Impulsiveness Scale 11; ADHD - Attention Deficit Hyperactivity Disorder; GAD – Generalized Anxiety disorder; OCD – Obsessive-Compulsive disorder. For presentation purposes the significant Lasso coefficients are indicated in bold.