Table 1. Patient's characteristics presented as pool data and divided in two groups according to RLS diagnosis.
| Variables | Patients Pool Data | Non RLS | RLS | P values |
| N | 70 | 40 | 30 | - |
| Female / Male | 19/51 | 9/31 | 10/20 | 0.313¥ |
| Age (yr) | 54.1±16.9 | 53.1±19.3 | 55.4±13.4 | 0.580 |
| BMI (Kg/m2) | 25.5±4.2 | 25.2±4.5 | 25.8±3.9 | 0.580 |
| Kt/V | 1.24±0.4 | 1.25±0.5 | 1.22±0.4 | 0.802 |
| Years in Hemodialysis | 3.0±2.6 | 2.5±1.6 | 3.7±3.5 | 0.093 |
| WHR | 0.97±0.07 | 0.97±0.06 | 0.97±0.07 | 0.744 |
| PLMS prevalence | 26 (37%) | 9 (22%) | 17 (57%) | 0.008 ¥ |
| PLMS index (per hour) | 20.4±29.3 | 10.3±20.2 | 31.5±33.7 | 0.003 |
| IRLS score | - | - | 23.7 ± 9.2 | - |
| SGA (A/B/C) | 31/9/1 | 22/7/1 | 9/2/0 | 0.820¥ |
| Ferritin (ng/ml) | 202.3±189.5 | 173.2±173.3 | 241.1±206.6 | 0.187 |
| Hct | 36.3±4.9 | 35.7±5.5 | 37.0±3.9 | 0.300 |
| Hb (g/dL) | 11.8±1.6 | 11.5±1.6 | 12.2±1.5 | 0.107 |
All data are mean ± SD. Abbreviations: BMI, body mass index; Kt/V, dialysis efficiency; WHR, waist to hip ratio; PLMS, Periodic Limb Movements in Sleep; IRLS, International Restless Legs Syndrome severity scale; SGA, subjective global assessment; Hct, hematocrit; Hb, hemoglobin.
¥
For categorical data a chi-square test was performed.