Table 2.

Teacher estimates of the percentage of adolescents who participate in gambling and who experience gambling problems

	Age group of adolescents
	11–14 years % (±95 %CI)	15–17 years % (±95 %CI)
Teacher estimates of adolescents participating in gambling at least once a year
14 % of youth	10.5 (±5.0)	3.5 (±3.0)
5–10 % of youth	25.2 (±7.1)	13.4 (±5.6)
11–20 % of youth	21.0 (±6.7)	11.3 (±5.2)
21–40 % of youth	17.5 (±6.2)	25.4 (±7.2)
41–60 % of youth	16.8 (±6.1)	17.6 (±6.3)
61–80 % of youth	8.4 (±4.5)	21.1 (±6.7)
81–100 % of youth	0.7 (±1.4)	7.7 (±4.3)
Teacher estimates of adolescents experiencing past-year gambling problems
1–4 % of youth	35.3 (±8.0)	16.8 (±6.3)
5–10 % of youth	47.8 (±8.4)	45.3 (±8.3)
11–20 % of youth	10.3 (±5.1)	16.1 (±6.1)
21–40 % of youth	5.9 (±4.0)	17.5 (±6.4)
41–60 % of youth	0.7 (±1.4)	4.4 (±3.4)
61–80 % of youth	0	0
81–100 % of youth	0	0

CI Confidence Interval