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

Table 3 Results of single air pollutant model lag effects and cumulative effects of NO₂

NO₂	Estimate⁽¹⁾	Std.Error⁽²⁾	RR	95%CI	t Value	Pr > \|t\|
Lag effects
Lag0	0.0416	0.0182	1.0425	1.0068 ~1.0781	2.29	0.0227
Lag1	0.0122	0.0186	1.0123	0.9758 ~1.0488	0.66	0.5119
Lag2	0.0263	0.0186	1.0266	0.9902 ~1.0630	1.42	0.1579
Lag3	0.0364	0.0185	1.0370	1.0007 ~1.0734	1.96	0.0508
Lag4	0.0003	0.0189	1.0003	0.9632 ~1.0375	0.02	0.9865
Lag5	-0.0042	0.0190	0.9959	0.9585 ~1.0332	-0.22	0.8273
Lag6	0.0178	0.0188	1.0179	0.9811 ~1.0548	0.95	0.3451
Lag7	0.0007	0.0191	1.0007	0.9634 ~1.0381	0.04	0.9687
Cumulative effect
Avg0	0.0416	0.0182	1.0425	1.0068 ~1.0781	2.29	0.0227
Avg1	0.0323	0.0200	1.0328	0.9936 ~1.0721	1.61	0.1075
Avg2	0.0390	0.0219	1.0397	0.9969 ~1.0826	1.78	0.0754
Avg3	0.0527	0.0236	1.0542	1.0080 ~1.1003	2.24	0.0257
Avg4	0.0493	0.0252	1.0506	1.0013 ~1.0999	1.96	0.0506
Avg5	0.0431	0.0265	1.0440	0.9921 ~1.0960	1.63	0.1051
Avg6	0.0461	0.0276	1.0472	0.9931 ~1.1013	1.67	0.0955
Avg7	0.0435	0.0287	1.0445	0.9881 ~1.1008	1.51	0.1310

ISSN: 1476-069X