Case Control Study
Copyright ©The Author(s) 2021.
World J Clin Cases. Sep 26, 2021; 9(27): 8008-8019
Published online Sep 26, 2021. doi: 10.12998/wjcc.v9.i27.8008
Table 2 Results of univariable logistic regression analysis
Characteristics
P value
OR
95%CI of OR
Lower
Upper
East region< 0.01
Middle region< 0.01 0.60.470.76
West region< 0.01 0.660.510.85
North region< 0.01 5.954.338.18
< 20 yr 0.01
20-25 yr < 0.015.932.116.74
25-30 yr 0.014.121.511.32
30-35 yr0.013.961.4310.94
35-40 yr0.014.481.5712.78
> 40 yr0.093.030.8510.77
Preterm0.03
Full-term birth0.010.590.390.88
Rural registration< 0.01 1.581.281.95
PROM< 0.01 1.611.232.11
BMI classification0.41
Gestational weight gain classification0.57
Primary school or lower< 0.01
Junior middle school0.981.010.333.12
High school0.460.650.212.01
College0.210.490.161.49
Master’s degree0.310.540.171.76
Doctoral degree0.421.870.48.74
Unemployed0.02
Administration0.20.790.541.14
Professionals0.10.770.561.05
Office clerk0.070.70.481.03
Business services industry0.060.750.561.01
Agricultural industry0.031.881.053.36
Others0.090.750.541.04
Personal annual income< 0.01
Family annual income< 0.01