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Table 2 Logistic regression analysis between fluoride exposure and children’s intelligence

From: Fluoride exposure and intelligence in school-age children: evidence from different windows of exposure susceptibility

  Normal High normal Superior Excellent
OR (95%CI) P OR (95%CI) P OR (95%CI) P OR (95%CI) P
CG (n = 223) reference   reference   reference   reference  
PFG (n = 104) 1.334(0.716,2.486) 0.364 1.478(0.869,2.514) 0.149 1.109(0.676,1.820) 0.683 0.489(0.279,0.858) 0.013
CFG (n = 155) 0.593(0.305,1.152) 0.123 1.226(0.756,1.987) 0.409 1.041(0.670,1.616) 0.858 1.037(0.671,1.603) 0.869
BFG (n = 140) 0.881(0.473,1.638) 0.688 1.262(0.769,2.072) 0.357 1.177(0.752,1.842) 0.476 0.738(0.462,1.179) 0.204