Table 2.

OR and 95% CI of non-use of the Glass Badge

Variable	To school	At school	At home	Outdoors	At bedtime
Air dose rate at home (0.1 μSv/h)	0.89 (0.78–1.02)	0.91 (0.85–0.98)*	0.98 (0.92–1.04)	0.97 (0.91–1.02)	0.94 (0.88–1.01)
School level
Primary	0.94 (0.42–2.12)	1.32 (0.76–2.28)	1.09 (0.75–1.58)	1.79 (1.25–2.56)**	1.23 (0.85–1.80)
Secondary	0.66 (0.30–1.45)	0.86 (0.53–1.37)	1.68 (1.19–2.36)**	1.39 (1.02–1.91)*	2.00 (1.42–2.81)***
High	1.00	1.00	1.00	1.00	1.00
Gender
Male	1.00	1.34 (1.07–1.71) *	1.00	1.00	1.00
Female	0.89 (0.57–1.38)	1.00	1.11 (0.89–1.38)	1.01 (0.82–1.24)	1.20 (0.94–1.53)
Dwelling area
Rural	1.00	1.00	1.00	1.00	1.00
Urban	0.67 (0.39–1.15)	0.87 (0.66–1.14)	0.77 (0.61–0.98)*	1.06 (0.85–1.32)	0.81 (0.62–1.06)
School commuting time (h)
<0.5	1.00	–	–	–	–
>0.5	0.87 (0.43–1.78)	–	–	–	–
School commuting means
Walk/bicycle	1.00	–	–	–	–
Car	1.43 (0.81–2.50)	–	–	–	–
Bus	1.94 (0.74–5.12)	–	–	–	–
Sports clubs (outdoors)
No	–	1.00	–	1.00	–
Yes	–	0.73 (0.51–1.04)	–	1.38 (1.00–1.90)*	–
Sports clubs (indoors)
No	–	1.00	–	–	–
Yes	–	0.88 (0.66–1.18)	–	–	–
Seat position in the classroom
Window area	–	1.00	–	–	–
Centre area	–	1.08 (0.81–1.42)	–	–	–
Passage area	–	0.97 (0.69–1.36)	–	–	–
Not decided	–	1.06 (0.68–1.65)	–	–	–
Room where most daytime hours were spent at home
Living (family) room	–	–	1.00	–	–
Own room	–	–	1.22 (0.84–1.77)	–	–
Floor of room where most daytime hours were spent at home
1st floor	–	–	1.00	–	–
2nd floor or higher	–	–	0.85 (0.61–1.17)	–	–
Hours spent outdoors on weekends (h)
<1	–	–	–	1.00	–
1–2	–	–	–	1.01 (0.79–1.29)	–
>2	–	–	–	1.53 (1.14–2.06)**	–
Sleeping place
Living (family) room	–	–	–	–	1.00
Own room	–	–	–	–	0.88 (0.58–1.34)
Floor of sleeping place
1st floor	–	–	–	–	1.00
2nd floor or higher	–	–	–	–	0.89 (0.68–1.17)

*p<0.05, **p<0.01, ***p<0.001.