Blood pressure and particulate air pollution in schoolchildren of Lahore, Pakistan

BMC Public Health

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 (**).

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