Table 2 Results of linear regression models predicting maternal hormone concentrationsa

From: Maternal, prenatal and perinatal characteristics and first trimester maternal serum hormone concentrations

 

Percent change ( P -value)

Independent variables

Androstenedione

Testosterone

DHEAS

Estradiol

Estrone

Progesterone

SHBG

Prolactin

Maternal age (years)

−2% (<0.0001)

−2% (0.0005)

−3% (<0.0001)

−2% (0.0001)

−2% (0.01)

1% (0.12)

  

Nulliparous vs parous

 

19% (0.002)

23% (0.0008)

17% (0.002)

24% (0.003)

  

59% (<0.0001)

Maternal height (cm)

   

−0.6% (0.04)

−0.9% (0.04)

 

−0.7% (0.0003)

 

Maternal BMI at initial visit (kg m−2)

1% (0.004)

3% (<0.0001)

2% (0.0004)

  

−2% (<0.0001)

−2% (<0.0001)

 

Current smoker vs past/never

     

−21% (0.001)

 

−19% (0.03)

Ever alcohol intake vs never

   

−11% (0.02)

    

Education (<13 vs 13+ years)

        
  1. aEstimates are from regression models including all factors that were associated with the hormones in the categorical analyses and gestational age at blood collection and are presented if they remained statistically significant or if they changed less than 10% in the full model. The estimates represent the percent increase or decrease in the hormone concentration for each unit increase in the independent variable. Analyses excluded (n=10) subjects with gestational lengths ⩾14 weeks to restrict the findings to the first trimester; n=410.
Back to article page