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Table 5 Results of single air pollutant model lag effects and cumulative effects of SO2

From: Effects of air pollution on neonatal prematurity in guangzhou of china: a time-series study

SO2

Estimate(1)

Std.Error(2)

RR

95%CI

t Value

Pr > |t|

Lag effects

      

Lag0

0.1060

0.0326

1.1118

1.0479 ~1.1757

3.26

0.0012

Lag1

0.0323

0.0331

1.0328

0.9678 ~1.0978

0.97

0.3309

Lag2

0.0432

0.0332

1.0442

0.9791 ~1.1093

1.30

0.1940

Lag3

0.0505

0.0332

1.0518

0.9867 ~1.1168

1.52

0.1291

Lag4

-0.0028

0.0336

0.9972

0.9314 ~1.0631

-0.08

0.9346

Lag5

-0.0154

0.0337

0.9847

0.9186 ~1.0507

-0.46

0.6475

Lag6

-0.0060

0.0337

0.9940

0.9280 ~1.0601

-0.18

0.8591

Lag7

-0.0238

0.0339

0.9765

0.9100 ~1.0429

-0.70

0.4828

Cumulative effect

      

Avg0

0.1060

0.0326

1.1118

1.0479 ~1.1757

3.26

0.0012

Avg1

0.0918

0.0358

1.0962

1.0259 ~1.1664

2.56

0.0108

Avg2

0.1020

0.0389

1.1074

1.0312 ~1.1836

2.62

0.0092

Avg3

0.1220

0.0417

1.1298

1.0480 ~1.2116

2.92

0.0037

Avg4

0.1100

0.0443

1.1163

1.0294 ~1.2032

2.49

0.0134

Avg5

0.0912

0.0467

1.0954

1.0039 ~1.1870

1.95

0.0518

Avg6

0.0826

0.0488

1.0861

0.9904 ~1.1818

1.69

0.0916

Avg7

0.0671

0.0510

1.0694

0.9694 ~1.1694

1.32

0.1894

  1. Notes: (1) Estimate (×100), (2) Std. Error (×100)
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Environmental Health

ISSN: 1476-069X