Table 3.
Quantile regression analyses to assess the impact of lockdown after the COVID-19 outbreak on children's physiological health indicators.
| Health indicators | N (n*) | Year (2020 vs. 2019) | ||
|---|---|---|---|---|
| β | SE | P | ||
| BMI, kg/m2 | 4,808 (0) | 0.302 | 0.091 | 0.001 |
| WHtR | 3,905 (903) | 0.001 | 0.002 | 0.515 |
| SBP, mmHg | 4,659 (149) | 0.572 | 0.341 | 0.093 |
| DBP, mmHg | 4,659 (149) | 0.135 | 0.282 | 0.632 |
| Hb, g/L | 4,654 (154) | −1.006 | 0.298 | 0.001 |
| TG, mmol/L | 3,692 (1,116) | −0.071 | 0.012 | <0.001 |
| TC, mmol/L | 3,692 (1,116) | 0.177 | 0.029 | <0.001 |
| LDL-C, mmol/L | 3,586 (1,222) | 0.294 | 0.023 | <0.001 |
| HDL-C, mmol/L | 3,586 (1,222) | 0.018 | 0.012 | 0.147 |
| 25(OH)D, nmol/L | 3,554 (1,254) | −6.05 | 0.453 | <0.001 |
| Blood glucose, mmol/L | 3,567 (1,241) | 0.029 | 0.015 | 0.044 |
| sUA, μmol/L | 3,661 (1,147) | 9.754 | 2.739 | <0.001 |
BMI, body mass index; WHtR, weight to height ratio; SBP, systolic blood pressure; DBP, diastolic blood pressure; Hb, Hemoglobin; TG, triglycerides; TC, total cholesterol; LDL-C, low density lipoprotein cholesterol; HDL-C, high density lipoprotein cholesterol; sUA, serum uric acid.
Age, sex and BMI were adjusted in all models, when BMI and WHtR ratio are the dependent variables, only age and sex were adjusted in the models.
*n refers to the number of children who did not have certain measurement or test results. The values in bold indicating that P < 0.05.