Free Thyroxine Level in the High Normal Reference Range Prescribed for Nonpregnant Women May Reduce the Preterm Delivery Rate in Multiparous

Table 2

Percentage of preterm birth rates plotted on parity status in the study group and control group.

	Total	Primiparous	Multiparous
Study group	4.4%	7.3%	2.6%
Control group	7.1%	7.6%	6.7%