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1. Error in Table 3

In the original article [1], there was a mistake in Table 3 as published. The units displayed for ferritin (mg/L) are incorrect, with µg/L being the correct unit for that parameter. Values for ferritin levels are correct, and only the units are affected by this typographic mistake. Interpretation of the results are not affected, since it was carried out with the correct values and units from the analysis. The corrected version of Table 3 appears below:

ijerph-18-06283-t003_Table 3 Table 3

Zero-inflated Poisson regression models for the association between inattention, hyperactivity, and ADHD symptoms with ferritin levels (µg/L log scale) on a continuous scale and in tertiles.

Tertile 1 [1.98, 20.92] (µg/L) Tertile 2 (20.92, 38.79] (µg/L) Tertile 3 (38.79, 216.5] (µg/L) p for Trend ** Continuous
Beta CI (95%) Beta CI (95%) Beta CI (95%) BetaCI (95%)
Inattention
Count model *1
Male *** 1 (Ref.) −0.3 (−0.55, −0.05) −0.37 (−0.6, −0.14) 0.002 −0.19 (−0.32, −0.07)
Female *** 1 (Ref.) −0.11 (−0.64, 0.42) 0.35 (−0.07, 0.77) 0.066 0.09 (−0.13, 0.31)
Zero-inflation model *2 1 (Ref.) 0.19 (−0.24, 0.63) 0.19 (−0.24, 0.63) 0.488 −0.04 (−0.26, 0.19)
Hyperactivity
Count model *1 1 (Ref.) −0.07 (−0.29, 0.16) −0.11 (−0.33, 0.11) 0.327 −0.03 (−0.15, 0.09)
Zero-inflation model *2 1 (Ref.) 0.24 (−0.16, 0.64) 0.17 (−0.23, 0.56) 0.411 0.11 (−0.11, 0.32)
ADHD
Count model *1 1 (Ref.) −0.09 (−0.24, 0.06) −0.09 (−0.23, 0.05) 0.239 −0.02 (−0.1, 0.05)
Zero-inflation model *2 1 (Ref.) 0.36 (0, 0.71) 0.12 (−0.22, 0.47) 0.515 0.13 (−0.06, 0.33)

Models adjusted by cohort, smoking during pregnancy, alcohol intake during pregnancy, pre-pregnancy BMI, social class, sex and age of the child, living with mother/father, and weeks (week of sample collection). *1 Count model coefficients (Poisson with log link). *2 Zero-inflation model coefficients (binomial with logit link). ** p for the trend between tertiles. *** Model with interaction term between sex and ferritin. Significant associations (p < 0.05) are indicated in bold.

2. Error in Table 4

In the original article [1], there was a mistake in Table 4 as published. The units displayed for ferritin (mg/L) are incorrect, with µg/L being the correct unit for that parameter. Values for ferritin levels are correct, and only the units are affected by this typographic mistake. Interpretation of the results are not affected, since it was carried out with the correct values and units from the analysis. The corrected version of Table 4 appears below:

ijerph-18-06283-t004_Table 4 Table 4

Zero-inflated Poisson regression models for the association between inattention, hyperactivity, and ADHD symptoms with ferritin levels (log scale).

Tertile 1 [1.98, 20.92] (µg/L) Tertile 2 (20.92, 38.79] (µg/L) Tertile 3 (38.79, 216.5] (µg/L) p for Trend ** Continuous
Beta CI (95%) Beta CI (95%) Beta CI (95%) Beta CI (95%)
stratified by Sex
Inattention
Boys Count model *1 1 (Ref.) −0.32 (−0.57, −0.06) −0.4 (−0.63, −0.16) 0.001 −0.21 (−0.34, −0.08)
Zero-inflation model *2 1 (Ref.) 0.09 (−0.46, 0.63) −0.27 (−0.8, 0.25) 0.270 −0.14 (−0.43, 0.15)
Girls Count model *1 1 (Ref.) 0.04 (−0.61, 0.69) 0.58 (0.02, 1.13) 0.012 0.15 (−0.09, 0.39)
Zero-inflation model *2 1 (Ref.) 0.37 (−0.36, 1.09) −0.32 (−1.13, 0.49) 0.311 −0.38 (−1.17, 0.42)
Hyperactivity
Boys Count model *1 1 (Ref.) −0.09 (−0.37, 0.19) −0.16 (−0.44, 0.11) 0.244 −0.03 (−0.18, 0.12)
Zero-inflation model *2 1 (Ref.) 0.16 (−0.37, 0.68) 0 (−0.52, 0.51) 0.981 −0.03 (−0.32, 0.25)
Girls Count model *1 1 (Ref.) −0.02 (−0.44, 0.39) −0.07 (−0.49, 0.35) 0.727 −0.1 (−0.33, 0.13)
Zero-inflation model *2 1 (Ref.) 0.41 (−0.22, 1.04) 0.48 (−0.16, 1.12) 0.143 0.34 (−0.02, 0.7)
ADHD
Boys Count model *1 1 (Ref.) −0.14 (−0.32, 0.03) −0.22 (−0.39, −0.06) 0.008 −0.07 (−0.16, 0.02)
Zero-inflation model *2 1 (Ref.) 0.25 (−0.23, 0.73) −0.05 (−0.52, 0.41) 0.778 −0.02 (−0.27, 0.24)
Girls Count model *1 1 (Ref.) 0.02 (−0.31, 0.34) 0.17 (−0.13, 0.47) 0.237 0.02 (−0.14, 0.19)
Zero-inflation model *2 1 (Ref.) 0.6 (0.05, 1.16) 0.49 (−0.05, 1.04) 0.077 0.39 (0.08, 0.69)
Stratified by Cohort
Inattention
Gipuzkoa Count model *1 1 (Ref.) −0.18 (−0.82, 0.47) 0.18 (−0.35, 0.71) 0.410 0.22 (−0.04, 0.48)
Zero-inflation model *2 1 (Ref.) 0.8 (−0.15, 1.75) 0.05 (−0.82, 0.91) 0.873 0.16 (−0.31, 0.63)
Sabadell Count model *1 1 (Ref.) −0.35 (−0.72, 0.03) −0.22 (−0.55, 0.1) 0.116 −0.16 (−0.31, 0)
Zero-inflation model *2 1 (Ref.) 0.38 (−0.29, 1.05) 0.03 (−0.6, 0.66) 0.887 −0.03 (−0.36, 0.3)
Valencia Count model *1 1 (Ref.) −0.24 (−0.64, 0.15) −0.39 (−0.76, −0.02) 0.043 −0.29 (−0.51, −0.06)
Zero-inflation model *2 1 (Ref.) −0.44 (−1.22, 0.35) −0.6 (−1.35, 0.14) 0.123 −0.27 (−0.71, 0.18)
Hyperactivity
Gipuzkoa Count model *1 1 (Ref.) −0.07 (−0.77, 0.62) 0.06 (−0.67, 0.78) 0.932 0.23 (−0.11, 0.57)
Zero-inflation model *2 1 (Ref.) 0.65 (−0.3, 1.6) −0.1 (−1, 0.8) 0.838 0.1 (−0.4, 0.59)
Sabadell Count model *1 1 (Ref.) −0.25 (−0.6, 0.11) −0.31 (−0.64, 0.02) 0.053 −0.12 (−0.28, 0.03)
Zero-inflation model *2 1 (Ref.) 0.24 (−0.36, 0.85) −0.09 (−0.69, 0.51) 0.814 −0.04 (−0.35, 0.27)
Valencia Count model *1 1 (Ref.) 0.06 (−0.36, 0.48) 0.06 (−0.36, 0.48) 0.904 0.01 (−0.25, 0.27)
Zero-inflation model *2 1 (Ref.) −0.02 (−0.87, 0.82) 0.59 (−0.17, 1.36) 0.070 0.4 (−0.03, 0.82)
ADHD
Gipuzkoa Count model *1 1 (Ref.) −0.06 (−0.48, 0.36) 0.37 (−0.01, 0.74) 0.045 0.33 (0.14, 0.53)
Zero-inflation model *2 1 (Ref.) 0.85 (0.06, 1.63) 0.27 (−0.48, 1.02) 0.412 0.28 (−0.13, 0.69)
Sabadell Count model *1 1 (Ref.) −0.29 (−0.53, −0.06) −0.28 (−0.5, −0.07) 0.005 −0.1 (−0.21, 0)
Zero-inflation model *2 1 (Ref.) 0.39 (−0.14, 0.92) 0.03 (−0.49, 0.55) 0.857 0.08 (−0.19, 0.35)
Valencia Count model *1 1 (Ref.) 0.09 (−0.16, 0.35) −0.11 (−0.35, 0.14) 0.244 −0.07 (−0.21, 0.08)
Zero-inflation model *2 1 (Ref.) −0.04 (−0.68, 0.6) 0.07 (−0.55, 0.69) 0.788 0.12 (−0.24, 0.49)

Models adjusted by cohort, smoking during pregnancy, alcohol intake during pregnancy, pre-pregnancy BMI, social class, sex and age of the child, living with mother/father, and weeks (week of sample collection). For Gipuzkoa and Sabadell, models do not include the variable “lives with mother/father”. *1 Count model coefficients (Poisson with log link). *2 Zero-inflation model coefficients (binomial with logit link). ** p for the trend between tertiles. Significant associations (p < 0.05) are indicated in bold.

3. Text Correction

In the original article, the units mentioned in the abstract regarding ferritin levels were also incorrect. Hence, we corrected Abstract lines 8–10: “Comparing ferritin level by tertile, significant differences were observed between the first tertile (1.98, 20.92) and the second (20.92, 38.79) and third (38.79, 216.5) (µg/L) tertiles”.

The authors apologize for any inconvenience caused and state that the scientific conclusions are unaffected. The original article has been updated.

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© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

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Title
Correction: Santa-Marina et al. Maternal Ferritin Levels during Pregnancy and ADHD Symptoms in 4-Year-Old Children: Results from the INMA-INfancia y Medio Ambiente (Environment and Childhood) Prospective Birth Cohort Study. Int. J. Environ. Res. Public Health 2020, 17, 7704
Author
Santa-Marina, Loreto 1 ; Lertxundi, Nerea 2 ; Andiarena, Ainara 2   VIAFID ORCID Logo  ; Irizar, Amaia 3 ; Sunyer, Jordi 4 ; Molinuevo, Amaia 5   VIAFID ORCID Logo  ; Llop, Sabrina 6 ; Julvez, Jordi 7   VIAFID ORCID Logo  ; Beneito, Andrea 8   VIAFID ORCID Logo  ; Ibarluzea, Jesús 9   VIAFID ORCID Logo  ; Imaz, Liher 10   VIAFID ORCID Logo  ; Ferrin, Maite 11 

1  Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, C/Monforte de Lemos 3–5, 28029 Madrid, Spain; [email protected] (L.S.-M.); [email protected] (J.S.); [email protected] (A.M.); [email protected] (S.L.); [email protected] (J.J.); [email protected] (J.I.); Biodonostia, Epidemiology and Public Health Area, Environmental Epidemiology and Child Development Group, 20014 San Sebastian, Spain; [email protected] (N.L.); [email protected] (A.A.); Public Health Division of Gipuzkoa, Basque Government, 20013 San Sebastian, Spain; [email protected] 
2  Biodonostia, Epidemiology and Public Health Area, Environmental Epidemiology and Child Development Group, 20014 San Sebastian, Spain; [email protected] (N.L.); [email protected] (A.A.); Faculty of Psychology, University of the Basque Country (UPV/EHU), Avenida Tolosa 70, 20018 San Sebastian, Spain 
3  Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, C/Monforte de Lemos 3–5, 28029 Madrid, Spain; [email protected] (L.S.-M.); [email protected] (J.S.); [email protected] (A.M.); [email protected] (S.L.); [email protected] (J.J.); [email protected] (J.I.); Biodonostia, Epidemiology and Public Health Area, Environmental Epidemiology and Child Development Group, 20014 San Sebastian, Spain; [email protected] (N.L.); [email protected] (A.A.); Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Spain 
4  Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, C/Monforte de Lemos 3–5, 28029 Madrid, Spain; [email protected] (L.S.-M.); [email protected] (J.S.); [email protected] (A.M.); [email protected] (S.L.); [email protected] (J.J.); [email protected] (J.I.); Hospital del Mar Research Institute, 08003 Barcelona, Spain; ISGlobal—Instituto de Salud Global de Barcelona–Campus MAR, PRBB, 08003 Barcelona, Spain 
5  Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, C/Monforte de Lemos 3–5, 28029 Madrid, Spain; [email protected] (L.S.-M.); [email protected] (J.S.); [email protected] (A.M.); [email protected] (S.L.); [email protected] (J.J.); [email protected] (J.I.) 
6  Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, C/Monforte de Lemos 3–5, 28029 Madrid, Spain; [email protected] (L.S.-M.); [email protected] (J.S.); [email protected] (A.M.); [email protected] (S.L.); [email protected] (J.J.); [email protected] (J.I.); Epidemiology and Environmental Health Joint Research Unit, FISABIO–Universitat Jaume I–Universitat de València, 08003 València, Spain; [email protected] 
7  Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, C/Monforte de Lemos 3–5, 28029 Madrid, Spain; [email protected] (L.S.-M.); [email protected] (J.S.); [email protected] (A.M.); [email protected] (S.L.); [email protected] (J.J.); [email protected] (J.I.); ISGlobal—Instituto de Salud Global de Barcelona–Campus MAR, PRBB, 08003 Barcelona, Spain; Institut d’Investigació Sanitària Pere Virgili (IISPV), Hospital Universitari Sant Joan de Reus, 43204 Reus, Spain 
8  Epidemiology and Environmental Health Joint Research Unit, FISABIO–Universitat Jaume I–Universitat de València, 08003 València, Spain; [email protected] 
9  Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Instituto de Salud Carlos III, C/Monforte de Lemos 3–5, 28029 Madrid, Spain; [email protected] (L.S.-M.); [email protected] (J.S.); [email protected] (A.M.); [email protected] (S.L.); [email protected] (J.J.); [email protected] (J.I.); Biodonostia, Epidemiology and Public Health Area, Environmental Epidemiology and Child Development Group, 20014 San Sebastian, Spain; [email protected] (N.L.); [email protected] (A.A.); Public Health Division of Gipuzkoa, Basque Government, 20013 San Sebastian, Spain; [email protected]; Faculty of Psychology, University of the Basque Country (UPV/EHU), Avenida Tolosa 70, 20018 San Sebastian, Spain 
10  Public Health Division of Gipuzkoa, Basque Government, 20013 San Sebastian, Spain; [email protected]; Biodonostia, Epidemiology and Public Health Area, Epidemiology of Chronic and Communicable Diseases Group, 20014 San Sebastian, Spain 
11  Haringey Child and Adolescent Mental Health Service, Barnet, Enfield and Haringey NHS Mental Health Trust, London N15 3TH, UK; [email protected]; Recognition Health, London W1G 9RU, UK 
First page
6283
Publication year
2021
Publication date
2021
Publisher
MDPI AG
ISSN
1661-7827
e-ISSN
1660-4601
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.3390/ijerph18126283
ProQuest document ID
2544977624
Copyright
© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.