Air Pollution Metric Analysis While Determining Susceptible Periods of Pregnancy for Low Birth Weight
Table 2
Included covariate results for the model in (1) using the DS weekly exposures for all women in TDSHS health service region 11.
Covariate
Mean
SD
Percentiles
Intercept**
7.263
0.790
5.656
7.284
8.763
Gestational age (weeks)**
−0.243
0.014
−0.270
−0.243
−0.216
Season of birth
Spring versus winter
0.047
0.074
−0.098
0.046
0.191
Summer versus winter
0.006
0.082
−0.152
0.006
0.167
Fall versus winter**
0.127
0.056
0.020
0.127
0.240
Female versus male baby**
0.226
0.031
0.166
0.226
0.287
Previous live births
One versus none**
−0.244
0.039
−0.320
−0.244
−0.168
≥Two versus none**
−0.344
0.044
−0.429
−0.343
−0.259
Maternal age group
10–19 versus 30–34
0.053
0.061
−0.065
0.053
0.173
20–24 versus 30–34
0.023
0.049
−0.074
0.023
0.120
25–29 versus 30–34
−0.013
0.048
−0.108
−0.013
0.082
35–39 versus 30–34
0.038
0.067
−0.094
0.038
0.169
≥40 versus 30–34
0.144
0.121
−0.101
0.145
0.375
Maternal race
Black versus white**
0.484
0.158
0.159
0.488
0.787
Hispanic versus white
0.067
0.058
−0.044
0.067
0.183
Other versus white
0.292
0.151
−0.014
0.295
0.576
Maternal education
High school versus high school**
−0.140
0.038
−0.214
−0.140
−0.064
High school versus high school**
−0.175
0.043
−0.259
−0.176
−0.091
Birth year
2002 versus 2001
−0.109
0.482
−0.933
−0.152
0.958
2003 versus 2001
0.145
0.482
−0.673
0.100
1.212
2004 versus 2001
0.112
0.483
−0.709
0.067
1.184
The (**) items have 95% credible intervals which do not include zero. The MC error for the means ranged from 0.0003 to 0.0164 with an average value of 0.0031.
