Journal of Thyroid Research / 2011 / Article / Tab 1

Research Article

First- and Second-Trimester Reference Intervals for Thyroid Hormones during Pregnancy in “Rhea” Mother-Child Cohort, Crete, Greece

Table 1

Demographic data for pregnant women in total and reference study population.

Total study populationaReference population
1st trimester2nd trimester3rd trimester1st trimester2nd trimester

Sample size 45879448143260
Age (years)b29.16 (5.12)28.98 (5.19)28.37 (4.61)28.50 (5.09)27.79 (4.95)
Greek origin (%)369 (80.6)698 (87.9)42 (87.5)114 (79.7)221 (85)

aWomen with available biological samples.
bValues are expressed as mean (SD).

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