Table 2. The baseline levels of some medical examination traits of the participants according to shift work.
| Variables(means±sd) | Total | Shift Work | P value | |
|---|---|---|---|---|
| Never | ≥1 Year | |||
| Weight | 63.50±10.44 | 63.49±10.44 | 63.53±10.44 | 0.757 |
| Waist | 83.24±9.51 | 83.32±9.48 | 83.09±9.57 | 0.073 |
| SBP | 129.94±18.74 | 129.46±18.76 | 130.20±18.72 | 0.003 |
| DBP | 77.88±10.89 | 77.58±10.86 | 78.47±10.94 | <0.0001 |
| Haematological traits | ||||
| RBC (t/l) | 4.57±0.47 | 4.57±0.48 | 4.56±0.46 | 0.187 |
| WBC (g/l) | 6.07±1.68 | 6.06±1.68 | 6.08±1.68 | 0.298 |
| Haemoglobin (g/l) | 136.57±14.42 | 136.15±14.21 | 137.38±14.78 | <0.0001 |
| Platelet count (g/l) | 186.92±56.86 | 184.96±55.67 | 190.60±58.87 | <0.0001 |
| Fasting glucose (mmol/l) | 6.07±1.74 | 6.01±1.73 | 6.10±1.75 | <0.0001 |
| Lipids | ||||
| TC (mmol/l) | 5.18±0.98 | 5.19±0.98 | 5.16±0.98 | 0.024 |
| TG (mmol/l) | 1.46±1.15 | 1.46±1.17 | 1.46±1.11 | 0.896 |
| HDL-C (mmol/l) | 1.44±0.41 | 1.44±0.40 | 1.43±0.43 | 0.029 |
| LDL-C (mmol/l) | 3.02±0.84 | 3.02±0.84 | 3.02±0.83 | 0.776 |
Abbreviation: SBP, Systolic blood pressure; DBP, diastolic blood pressure; RBC, red blood cell; WBC, white blood cell; TC, total cholesterol; TG, total triglycerides; HDL-C, high-density lipoprotein cholesterol; LDL-C, low-density lipoprotein cholesterol.
P values were calculated by independent sample t-test for numerical data.