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Table 2 Summary of estimated PM2.5 concentration (μg m− 3)

From: Correlation between exposure to fine particulate matter and hypertensive disorders of pregnancy in Shanghai, China

Gestational period

Median (Q1 - Q3)

P value

Total

No HDP

HDP

0–12 gestational weeks

54.6 (46.5–60.1)

54.4 (46.3–60.0)

57.2 (50.1–60.6)

< 0.01

13–20 gestational weeks

52.0 (44.3–56.3)

52.0 (44.3–56.3)

52.1 (44.2–56.5)

0.68

0–20 gestational weeks

51.4 (47.3–57.8)

51.3 (47.3–57.8)

54.1 (47.8–58.3)

0.03

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Environmental Health

ISSN: 1476-069X