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Table 9 Odds ratios and confidence intervals for neurologic and behavioral disorders comparing exposed and unexposed residents

From: Cluster of systemic lupus erythematosus (SLE) associated with an oil field waste site: a cross sectional study

  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
  1. * 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.
  2. Controlled for age, gender, race/ethnicity, education and smoking history