Fig. 3
From: Effect of ambient air pollution on premature SGA in Changzhou city, 2013–2016: a retrospective study
Associations of air pollutants with SGA in three-pollutants model over the entire pregnancy period. These were estimated using generalized estimating equations adjusting for infant gender, maternal age and parity, year of birth, and season of birth in SGA models, and gestational age and meteorological information (mean temperature, relative humidity and air pressure) were also included. PM2.5: particular matter, NO2: nitrogen dioxide, SO2: sulphur dioxide, SGA: small for gestation age