Table 9

Odds ratios and confidence intervals for neurologic and behavioral disorders comparing exposed and unexposed residents

Exposed N(%) or mean ± s.d.
 Unexposed N(%) or mean ± s.d.
 Odds Ratio
 95% Confidence Interval
 P-value
Dizziness*
 4.40 ± 3.10
 2.25 ± 1.96
 4.42
 2.37, 8.24
 <0.0001
Lightheadedness*
 4.85 ± 3.12
 2.65 ± 1.81
 5.02
 2.69, 9.34
 <0.0001
Loss of balance*
 3.68 ± 3.07
 2.24 ± 1.73
 2.83
 1.53, 5.22
 0.0009
Extreme fatigue*
 6.97 ± 3.69
 3.12 ± 2.40
 11.50
 5.94, 22.28
 <0.0001
Somnolence*
 5.08 ± 3.76
 2.11 ± 1.86
 4.99
 2.66, 9.36
 <0.0001
Can't fall asleep*
 4.79 ± 3.79
 2.89 ± 2.50
 1.94
 1.06, 3.54
 0.03
Wake up frequently*
 5.12 ± 3.79
 2.91 ± 2.55
 3.98
 2.16, 7.36
 >0.0001
Sleep soundly for only a few hours*
 4.83 ± 3.59
 2.81 ± 2.51
 4.00
 2.16, 7.40
 >0.0001
Lack of concentration*
 5.70 ± 3.73
 3.76 ± 2.66
 2.67
 1.47, 4.84
 0.001
Recent memory loss*
 5.22 ± 3.82
 3.76 ± 2.66
 2.87
 1.58, 5.23
 0.0006
Decreased libido*
 4.36 ± 4.00
 2.92 ± 2.35
 3.00
 1.60, 5.59
 0.0006
When driving in familiar areas, do you ever get lost or go the wrong way *
 2.67 ± 2.73
 1.55 ± 1.33
 3.05
 1.54, 6.08
 0.002

* Odds ratio and confidence intervals are estimated using multinomial logistic regression models with generalized estimating equations (GEE); odds ratio interpreted as the odds of exposed being in a higher category compared to unexposed. Respondents were asked to "score each question on a scale of 1 – 11, one representing never and 11 representing always.

Controlled for age, gender, race/ethnicity, education and smoking history

Dahlgren et al. Environmental Health 2007 6:8   doi:10.1186/1476-069X-6-8
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