Abstract
Riddell et al. [Environ Int 2019; 133(Pt B): 105190], have reported an error in their paper. In Table 4, the fourth column was originally labelled as Adjusted Odds Ratio (aOR) when it should have been labelled as a Beta Coefficient (B). A corrected version of Table 4 is presented below. The authors apologize for the error.
Table 4. Adjusted Odds Ratio (aOR) and Beta Coefficient (B) for the association between fluoride exposure and ADHD diagnosis and inattentive/hyperactive symptoms.
| ADHD diagnosis | SDQ H/I subscale score | |||
|---|---|---|---|---|
| aORa | 95% CI | Ba | 95% CI | |
| UFSG (mg/L) b | 0.96 | 0.63, 1.46 | 0.31 | -0.04, 0.66 |
| Fluoride in tap water (mg/L) | 6.10* | 1.60, 22.8 | 0.31*c | 0.04, 0.58 |
| 75th percentile age | —d | – | 1.52* | 0.23, 2.80 |
| 25th percentile age | – | – | -0.33 | -1.51, 0.84 |
| CWF statuse | 1.21* | 1.03, 1.42 | 0.11* | 0.02, 0.20 |
| 75th percentile age | 2.84* | 1.40, 5.76 | 0.70* | 0.34, 1.06 |
| 25th percentile age | 0.91 | 0.41, 1.99 | 0.04 | -0.38, 0.46 |
Abbreviations: ADHD = Attention Deficit/Hyperactivity Disorder; CWF = community water fluoridation; aOR = adjusted odds ratio; B = beta estimate; SDQ H/I = Strengths and Difficulties Questionnaire Hyperactivity-Inattention.
- a
Adjusted for child’s sex, age at interview, ethnicity (white or other), Body Mass Index, highest level of parental education, total household income, exposure to cigarette smoke inside the home (yes/no), concurrent blood lead level (log10-transformed).
b
Non-significant main effect of urinary fluoride level predicting ADHD diagnosis (B = -0.04, p = .84, N = 119/1635 with ADHD/total sample) or SDQ subscale score (B = 0.31, p = .08, N = 1532).
c
Interaction between age and water fluoride level predicting SDQ subscale score (B = 0.31, p = .03, N = 588).
d
Since the interaction between age and water fluoride was not significant, only the main effects are presented for the logistic regression predicting ADHD diagnosis from fluoride in tap water (mg/L; N = 39/626 with ADHD/total sample).
e
Significant interaction between age and CWF status predicting ADHD diagnosis (B = 0.19, p = .03, N = 65/1173 with ADHD/total sample) and SDQ subscale score (B = 0.11, p = .01, N = 1118).
*Corrigendum online at https://www.sciencedirect.com/science/article/pii/S0160412022000174?via%3Dihub