Table 2. Adjusted Odds Ratio of Insomnia Stratified by Body Weight, Rural Midwest, 2005 (n=1,234).
| Characteristics | Underweight/Normalc (N=478) | Overweight/Obese (N=756) | ||
|---|---|---|---|---|
|
| ||||
| aPORa | 95% CI | aPOR | 95% CI | |
| Regular physical activity | 0.37 | (0.14-0.99) | 0.76 | (0.51-1.14) |
| Gender (1 = female) | 2.36 | (0.97-5.74) | 1.17 | (0.59-2.31) |
| Age | 0.99 | (0.96-1.01) | 0.98 | (0.97-1.00) |
| Marital status (1 = unmarried) | 1.88 | (1.30-2.74) | 1.03 | (0.62-1.71) |
| Education | ||||
| Less than high school | 4.37 | (1.65-11.56) | 5.76 | (2.72-12.21) |
| High school graduate | 1.56 | (0.99-2.47) | 3.05 | (2.25-4.13) |
| Some college | 1.14 | (0.70-1.86) | 3.27 | (2.01-5.33) |
| College and greater | reference | reference | reference | reference |
| Chronic diseasesb | 2.47 | (0.42-14.56) | 2.07 | (1.38-3.12) |
a
aPOR: adjusted prevalence odds ratio; 95% CI: 95% confidence interval
b
self-reported history of chronic disease by answering yes to any of the following conditions: heart disease, kidney disease, diabetes, high blood sugar, hypertension, cholesterol, or arthritis; and self-reported history of cancer
c
Interaction term of regular physical activity and BMI P value = .04; the significant interaction term was used to justify the stratified analysis.