Low education: primary and secondary school; Excessive Weight Gain:
above IOM guidelines per BMI category; Previous PTB: prior birth
< 37 weeks; Class A1 GDM: diet, Class A2 GDM: Insulin therapy;
Non reassuring fetal monitoring category III tracing according to ACOG.
* Chi square test, ** Fisher Exact test, ยง ANOVA on ranks, + ANOVA