Quantitative variables | Global PSQI score | Restless legs syndrome score | ||
r* | Pvalue | r | Pvalue | |
Age (year) | −0.200 | 0.003 | −0.164 | 0.016 |
Work experience (year) | −0.160 | 0.019 | −0.108 | 0.115 |
Number of shifts per week | −0.033 | 0.627 | 0.062 | 0.365 |
Number of hours of work shift | −0.022 | 0.752 | −0.071 | 0.300 |
Hemoglobin (gr/dl) | −0.149 | 0.029 | −0.548 | <0.001 |
MCV (μm3) | 0.062 | 0.364 | −0.110 | 0.107 |
Ferritin (ng/ml) | −0.186 | 0.006 | −0.410 | <0.001 |
TIBC (μg/d) | 0.227 | <0.001 | 0.395 | <0.001 |
Qualitative variables | Variable | Mean | S.D | **Pvalue |
Global PSQI score | Male | 8.46 | 1.97 | 0.024 |
Female | 9.63 | 2.35 | ||
Restless legs syndrome score | Male | 10.60 | 2.93 | <0.001 |
Female | 16.5 | 1.64 | ||
Global PSQI score | Non-academic | 8.11 | 1.36 | 0.146 |
Academic | 7.96 | 1.89 | ||
Restless legs syndrome score | Non-academic | 16.83 | 2.24 | 0.339 |
Academic | 16.64 | 1.89 |