Table 3.

Prevalence of problem behaviours for children aged 11–17 years

Behaviour	N	Per cent (95 % CI)
Went without eating or sleeping	190	5.9 (5.0–6.8)
Feel bothered when not doing	615	20.7 (18.9–22.4)
Use when not really interested	1014	32.0 (30.1–33.9)
Spent less time than should with family or friends, doing school work or work	685	21.6 (20.0–23.1)
Tried unsuccessfully to spend less time	662	23.5 (21.7–25.2)
Problem Internet/electronic gaming behavioura	127	3.9 (3.2–4.6)

CI Confidence interval

^aFour to five behaviours experienced