Factors were related to low level of amniotic fluid include: urban pregnant women (OR=2.26, 95% CI: 1.34 - 3.81), low economic status (OR=2.64, 95% CI: 1.30 - 5.38), 40 to under 42 weeks gestation (OR=1.96, 95% CI: 1.18 - 3.33).