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Table 2 Spearman correlations between BFRs, thyroid hormones, and enzyme activity by infant sex

From: Brominated flame retardants in placental tissues: associations with infant sex and thyroid hormone endpoints

   BDE-47 BDE-99 BDE-100 BDE-153 BDE-154 BDE-209 2,4,6-TBP ΣBFR ΣBDE T3 rT3 T4 DIO3 T2S
Males (n = 48) T3 −0.07 −0.21 −0.16 −0.03 −0.13 −0.10 −0.18 −0.22 −0.16 1.00     
rT3 0.02 −0.34* 0.01 0.13 −0.04 −0.35* −0.02 −0.13 −0.11 0.14 1.00    
T4 −0.14 −0.21 −0.21 0.04 −0.07 −0.15 −0.11 −0.16 −0.15 0.53* 0.35* 1.00   
DI 0.03 0.16 0.15 0.04 −0.05 −0.02 0.00 0.05 0.09 −0.05 0.05 −0.27 1.00  
T2S 0.02 −0.14 0.07 −0.01 0.02 −0.14 −0.02 −0.05 −0.01 −0.13 0.29* −0.15 0.11 1.00
T3S 0.29* 0.03 0.26# 0.27# 0.16 0.00 −0.11 −0.02 0.25# −0.15 0.10 −0.05 0.17 0.29
Females (n = 46) T3 0.22 0.33* 0.19 0.23 0.08 0.17 0.36* 0.35* 0.25# 1.00     
rT3 −0.12 −0.34* −0.08 −0.10 −0.07 −0.05 −0.14 −0.13 −0.19 −0.16 1.00    
T4 0.08 −0.07 −0.02 −0.03 −0.06 0.06 0.06 0.10 0.03 0.45* 0.24 1.00   
DI 0.10 0.00 0.18 0.11 0.24# 0.22 0.02 0.08 0.09 −0.10 0.23 0.02 1.00  
T2S 0.11 −0.06 0.05 0.13 0.11 −0.10 −0.11 0.02 0.13 −0.19 −0.08 −0.12 −0.16 1.00
T3S 0.08 −0.25# 0.11 0.15 0.15 −0.02 0.02 0.05 0.05 −0.07 −0.06 0.05 0.17 0.19
  1. * < 0.05, # < 0.10