Table 2.
Blood pressure and urinary measurements of children in low and high pollution urban area
| Characteristics | Low Pollution School (n=73) | High Pollution School (n=93) | P-value |
|---|---|---|---|
| Systolic blood pressure - mmHg* |
108.3 (106.1 to 110.6) |
115.9 (114.0 to 117.9) |
<0.0001 |
| Diastolic blood pressure - mmHg* |
66.4 (64.4 to 68.4) |
70.9 (69.2 to 72.7) |
0.002 |
| Pulse - bpm* |
98.1 (94.8 to 101.4) |
94.9 (92.1 to 97.7) |
0.2 |
| Urinary creatinine - g/l |
0.7 (0.2) |
1.3 (0.8) |
<0.0001 |
| Urinary Na - nmol/l** |
127.1 (109.5 to 147.5) |
131.5 (115.3 to 149.2) |
0.7 |
| Urinary K - nmol/l** | 54.8 (46.1 to 65.2) | 45.1 (39.0 to 52.2) | 0.1 |
The data is mentioned as mean (standard deviation) for creatinine and as adjusted mean (95% CI) with adjustment made for gender, age, height, weight, urinary sodium, potassium, socio-economic status, passive smoking and creatinine (*), or adjusted mean (95% CI) with adjustment made for gender, age, height, weight, socio-economic status and creatinine (**).