Explanatory Variables | Conditional | With Instrumental Variables* |
p.e s.e | p.e s.e | |
Past Behaviour* | −0.30 0.1 | −0.03 0.2 |
Hours spend alone | ||
up to 3 hours | 0.07 0.13 | 0.11 0.18 |
3 - 9 hours | −0.38 0.13 | −0.37 0.14 |
9+ hours | 0.00 | 0.00 |
Has close relatives | ||
yes | 0.00 | 0.00 |
no | −0.32 0.13 | −0.32 0.13 |
Subjective variables | ||
Presence of friends** | ||
yes | 0.00 | 0.00 |
no | 0.43 0.15 | 0.22 0.64 |