Table 3 Multivariate-adjusted prevalence ratios for factors associated with restless legs syndrome* in the Health and Retirement Study 2002 survey (N = 1008)
Restless Leg Symptoms Predictor | Multivariate Adjusted Model† | ||
|---|---|---|---|
PR | 95% CI | p | |
Age (reference: 50–64 years) | |||
Age 65–79 years | 0.45 | (0.28, 0.72) | <0.001 |
Age 80 or older | 0.52 | (0.25, 1.07) | 0.07 |
Gender (reference: Male) | 1.50 | (0.93, 2.40) | 0.10 |
Income (reference: Lowest Quartile) | |||
2nd quartile | 1.37 | (0.83, 2.27) | 0.22 |
3rd quartile | 0.82 | (0.46, 1.46) | 0.51 |
4th quartile | 1.54 | (0.85, 2.81) | 0.16 |
Current drinking status (reference: None) | 0.59 | (0.37, 0.92) | 0.02 |
Body Mass Index (reference: BMI < 25.0) | |||
BMI 25.0 – 29.9 | 1.77 | (1.05, 2.99) | 0.03 |
BMI 30 or greater | 1.40 | (0.80, 2.46) | 0.24 |
Pain category (reference: None) | |||
Mild to moderate | 2.67 | (1.47, 4.84) | 0.001 |
Severe | 3.44 | (2.00, 5.93) | <0.001 |
Number of chronic medications used (reference: None) | |||
1 chronic medication | 1.14 | (0.57, 2.26) | 0.71 |
2 chronic medications | 1.32 | (0.70, 2.46) | 0.39 |
3 or more chronic medications | 2.54 | (1.26, 5.12) | 0.009 |
Out of pocket medical expenses (reference: Highest Quartile) | |||
2nd quartile | 1.65 | (0.88, 3.09) | 0.12 |
3rd quartile | 1.33 | (0.69, 2.57) | 0.40 |
4th quartile | 2.12 | (1.17, 3.86) | 0.01 |
Frequency of doctor visits in last 2 years (reference: 0–3 visits) | |||
4-7 visits | 0.89 | (0.43, 1.82) | 0.74 |
8-11 visits | 0.82 | (0.46, 1.46) | 0.50 |
12 or more visits | 0.49 | (0.27, 0.90) | 0.02 |
Health limits ability to work | 2.91 | (1.75, 4.85) | <0.001 |
Falls in the last 2 years (reference: None) | |||
Fell once | 1.33 | (0.73, 2.40) | 0.35 |
Fell 2 or more times | 2.63 | (1.49, 4.66) | <0.001 |
Associated sleep problems | |||
Problems with early waking | 1.69 | (1.09, 2.62) | 0.02 |
Problems with frequent waking | 1.55 | (1.00, 2.41) | 0.05 |