TABLE 2.
RLS Risk Factor Characteristics
| Parameter, n (%) | Patients With RLSa,b n/n (%) | Patients Without RLSb n/n (%) | P value |
|---|---|---|---|
| First-degree relative with RLS | 11/92 (12.0) | 14/121 (11.6) | NS |
| Iron deficiency | |||
| Current | 3/65 (4.6) | 5/106 (4.7) | NS |
| Past | 34/69 (49.3) | 39/118 (33.1) | 0.031 |
| History of | |||
| Type I diabetes | 3/69 (4.3) | 3/118 (2.5) | NS |
| Fibromyalgia | 2/69 (2.9) | 2/118 (1.7) | NS |
| Rheumatoid arthritis | 1/69 (1.4) | 4/118 (3.4) | NS |
| Parkinson's disease | 0/68 (0.0) | 2/118 (1.7) | NS |
| Renal failure | 0/67 (0.0) | 1/118 (0.8) | NS |
| Currently pregnant | 0/53 (0.0) | 3/116 (2.6) | NS |
NS, not significant; RLS, restless legs syndrome.
a
Patients with RLS at any point in lifetime.
b
Total number of patients surveyed differed per parameter due to insufficient data from 1 study center.