Similar results were found when considering SGA as an out- come (Table 5). For moderately preterm and term births, the as- sociation between SGA and maternal PM10 exposure was mostly significant (except for some time windows at the end of preg- nancy), but no significant associations were found among ex- tremely preterm births. Odds ratios for a 10 mg/m3 increase in PM10 were highest for the entire pregnancy time window: 1.19 (95% CI: 1.07, 1.32) for moderately preterm births and 1.09 (95% CI:1.06, 1.12) for term newborns.