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Table 2 Odds ratios (OR) and 95% confidence intervals (CI) for factors that could explain regular use of mobile phone and DECT.

From: Use of wireless telephones and self-reported health symptoms: a population-based study among Swedish adolescents aged 15–19 years

 

Adolescents who reported regular mobile phone use*

Adolescents who reported Regular DECT use**

 

Exposed/Unexposed

OR

95% CI

Exposed/Unexposed

OR

95% CI

Household income

      

   Average

368/191

1.0

-

304/154

1.0

-

   < Average

106/33

1.4

0.9 – 2.2

81/31

1.3

0.8 – 2.0

   > Average

312/139

1.2

0.9 – 1.6

250/126

1.0

0.8 – 1.4

H-regions

      

   H1

149/56

1.0

-

125/44

1.0

-

   H2

122/46

1.0

0.6 – 1.6

105/36

1.0

0.6 – 1.7

   H3

330/160

0.8

0.5 – 1.1

268/130

0.7

0.5 – 1.1

   H4

149/88

0.6

0.4 – 0.95

128/77

0.6

0.4 – 0.9

   H5

60/20

1.1

0.6 – 2.1

42/28

0.5

0.3 – 0.97

   H6

56/19

1.1

0.6 – 2.0

27/22

0.5

0.2 – 0.9

Siblings

      

   No

41/11

1.0

-

28/11

1.0

-

   Yes

825/378

0.6

0.3 – 1.1

667/326

0.8

0.4 – 1.7

Overweight

      

   No

721/314

1.0

-

565/266

1.0

-

   Yes

114/57

0.9

0.6 – 1.2

103/56

0.9

0.6 – 1.4

Obesity

      

   No

808/361

1.0

-

640/312

1.0

-

   Yes

27/10

1.0

0.5 – 2.2

28/10

1.2

0.6 – 2.6

Time spent watching TV

      

   < 30 min per day

87/54

1.0

-

71/41

1.0

-

   ≥ 30 – 60 min per day

228/103

1.5

0.99 – 2.3

174/96

1.2

0.7 – 2.0

   > 60 – 180 min per day

390/185

1.4

0.97 – 2.1

337/144

1.6

1.02 – 2.5

   > 180 min per day

148/38

2.4

1.4 – 4.0

105/52

1.2

0.7 – 2.0

Time spent playing computer games

      

   Never

404/130

1.0

-

325/94

1.0

-

   < 30 min per day

177/89

0.8

0.5 – 1.1

143/78

0.8

0.5 – 1.1

   ≥ 30 – 60 min per day

105/65

0.7

0.5 – 1.1

76/67

0.6

0.4 – 0.95

   > 60 – 180 min per day

113/66

0.8

0.5 – 1.3

88/64

0.8

0.5 – 1.3

   > 180 min per day

65/37

0.8

0.5 – 1.4

60/33

1.2

0.7 – 2.0

Physical activity

      

   1–7 hours per week

440/220

1.0

-

348/183

1.0

-

   8–14 hours per week

164/70

1.3

0.9 – 1.8

138/60

1.5

1.02 – 2.1

   > 14 hours per week

33/10

1.4

0.7 – 3.0

23/12

1.0

0.4 – 2.0

Use of DECT

      

   Never

137/70

1.0

-

   

   < 5 min per day

166/163

0.6

0.4 – 0.9

   

   ≥ 5 – 15 min per day

244/90

1.5

1.04 – 2.3

   

   > 15 – 30 min per day

170/40

2.4

1.5 – 3.7

   

   > 30 min per day

130/17

4.1

2.3 – 7.4

   

Mobile phone access

      

   < 2 min per day

   

147/163

1.0

-

   ≥ 2 min – 5 min per day

   

159/75

2.3

1.6 – 3.4

   > 5 min – 15 min per day

   

217/55

3.8

2.6 – 5.6

   > 15 min – 30 min per day

   

89/17

5.0

2.8 – 9.0

   > 30 min – 60 min per day

   

46/12

3.3

1.7 – 6.6

   > 60 min per day

   

33/7

3.9

1.6 – 9.2

  1. * = Defined as talking ≥ 2 min per day – related to those who claim to have mobile phone access.
  2. ** = Defined as talking ≥ 5 min per day – related to those who claim to have DECT access.
  3. Unconditional logistic regression analysis adjusted for age and gender was used. Numbers of 'exposed' (regular use) and 'unexposed' (no regular use) in the different categories are shown.
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Environmental Health

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