1Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA, USA.
2Department of Occupational and Environmental Health, College of Public Health, University of Iowa, Iowa City, IA, USA.
3Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
4Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
5Obesity Research and Education Initiative, University of Iowa, Iowa City, IA, USA.
6Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, IA, USA.
7Environmental Health Sciences Research Center, University of Iowa, Iowa City, IA, USA.
8Center for Global and Regional Environmental Research, University of Iowa, Iowa City, IA, USA.
Copyright © 2019 Korean Diabetes Association
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
CONFLICTS OF INTEREST: No potential conflict of interest relevant to this article was reported.
The abstract of this study was accepted for presentation at the 2018 Society for Epidemiologic Research Meeting, June 19–22, 2018, Baltimore, MD, USA.
Model 1: adjusted for age (in years), sex (boys, girls), and urinary creatinine (quartiles). Model 2: Model 1+race/ethnicity (Hispanic, non-Hispanic white, non-Hispanic black, and other race), family income (family income to poverty ratio: ≤1.30, 1.31 to 3.50, >3.50, or missing), TV watching (<2 hours/day, ≥2 hours/day), total energy intake (quartiles), and Healthy Eating Index-2010 score (quartiles). Model 3: Model 2+mutual adjustment for BPA, BPF, and BPS.
BPA, bisphenol A; BPF, bisphenol F; BPS, bisphenol S; OR, odds ratio; CI, confidence interval.
aOR of obesity per unit increase in BPA, BPF, and BPS levels, bModel 2 is the main model.
Model 1: adjusted for age (in years), sex (boys, girls), and urinary creatinine (quartiles). Model 2: Model 1+race/ethnicity (Hispanic, non-Hispanic white, non-Hispanic black, and other race), family income (family income to poverty ratio: ≤1.30, 1.31 to 3.50, >3.50, or missing), TV watching (<2 hours/day, ≥2 hours/day), total energy intake (quartiles), and Healthy Eating Index-2010 score (quartiles). Model 3: Model 2+mutual adjustment for BPA, BPF, and BPS.
BPA, bisphenol A; BPF, bisphenol F; BPS, bisphenol S; OR, odds ratio; CI, confidence interval.
aOR of obesity per unit increase in BPA, BPF, and BPS levels, bModel 2 is the main model.
Values are presented as odds ratio (95% confidence interval). Adjusted for age (in years), urinary creatinine (quartiles), race/ethnicity (Hispanic, non-Hispanic white, non-Hispanic black, and other race), family income (family income to poverty ratio: ≤1.30, 1.31 to 3.50, >3.50, or missing), TV watching (<2 hours/day, ≥2 hours/day), total energy intake (quartiles), and Healthy Eating Index-2010 score (quartiles).
BPA, bisphenol A; BPF, bisphenol F; BPS, bisphenol S.
aFor general obesity analysis, the number of participants was 371 for boys and 374 for girls, bFor abdominal obesity analysis, the number of participants was 364 for boys and 366 for girls.
Variable | Quartile of bisphenol | P for trend | OR per unita | |||
---|---|---|---|---|---|---|
Quartile 1 | Quartile 2 | Quartile 3 | Quartile 4 | |||
BPA | ||||||
Median, ng/mL | 0.46 | 1.00 | 1.71 | 3.98 | ||
Cases of obesity/no. of participants | 35/196 | 51/194 | 40/173 | 39/182 | ||
OR (95% CI) | ||||||
Model 1 | 1 (ref) | 1.39 (0.83–2.33) | 1.74 (0.74–4.07) | 1.64 (0.83–3.21) | 0.12 | 1.26 (0.94–1.68) |
Model 2b | 1 (ref) | 1.47 (0.86–2.53) | 1.96 (0.88–4.35) | 1.74 (0.92–3.31) | 0.08 | 1.29 (0.97–1.72) |
Model 3 | 1 (ref) | 1.42 (0.80–2.52) | 1.89 (0.83–4.33) | 1.65 (0.86–3.16) | 0.14 | 1.24 (0.93–1.66) |
BPF | ||||||
Median, ng/mL | 0.14 | 0.21 | 0.46 | 1.55 | ||
Cases of obesity/no. of participants | 53/289 | 32/106 | 36/160 | 44/190 | ||
OR (95% CI) | ||||||
Model 1 | 1 (ref) | 1.62 (1.08–2.41) | 1.18 (0.65–2.17) | 1.20 (0.76–1.89) | 0.57 | 1.05 (0.89–1.24) |
Model 2b | 1 (ref) | 1.60 (1.12–2.30) | 1.52 (0.87–2.66) | 1.54 (1.02–2.32) | 0.05 | 1.17 (1.00–1.37) |
Model 3 | 1 (ref) | 1.58 (1.14–2.20) | 1.49 (0.83–2.67) | 1.48 (0.93–2.35) | 0.13 | 1.14 (0.96–1.36) |
BPS | ||||||
Median, ng/mL | 0.07 | 0.20 | 0.47 | 1.30 | ||
Cases of obesity/no. of participants | 29/156 | 42/209 | 45/197 | 49/183 | ||
OR (95% CI) | ||||||
Model 1 | 1 (ref) | 1.15 (0.57–2.36) | 1.12 (0.58–2.15) | 1.39 (0.49–3.96) | 0.54 | 1.10 (0.81–1.51) |
Model 2b | 1 (ref) | 1.27 (0.67–2.41) | 1.19 (0.63–2.25) | 1.36 (0.53–3.51) | 0.62 | 1.08 (0.79–1.49) |
Model 3 | 1 (ref) | 1.20 (0.53–1.98) | 1.24 (0.48–3.21) | 1.24 (0.48–3.21) | 0.73 | 1.06 (0.77–1.45) |
Variable | Quartile of bisphenol | P for trend | OR per unita | |||
---|---|---|---|---|---|---|
Quartile 1 | Quartile 2 | Quartile 3 | Quartile 4 | |||
BPA | ||||||
Median, ng/mL | 0.46 | 1.01 | 1.71 | 3.98 | ||
Cases of obesity/no. of participants | 69/192 | 68/190 | 60/167 | 65/181 | ||
OR (95% CI) | ||||||
Model 1 | 1 (ref) | 0.83 (0.41–1.66) | 1.17 (0.57–2.40) | 1.43 (0.80–2.57) | 0.16 | 1.21 (0.93–1.57) |
Model 2b | 1 (ref) | 0.83 (0.41–1.67) | 1.24 (0.65–2.35) | 1.47 (0.88–2.46) | 0.08 | 1.23 (0.98–1.56) |
Model 3 | 1 (ref) | 0.83 (0.40–1.74) | 1.21 (0.59–2.48) | 1.42 (0.77–2.62) | 0.19 | 1.20 (0.91–1.58) |
BPF | ||||||
Median, ng/mL | 0.14 | 0.21 | 0.46 | 1.54 | ||
Cases of obesity/no. of participants | 94/287 | 47/104 | 54/156 | 67/183 | ||
OR (95% CI) | ||||||
Model 1 | 1 (ref) | 1.48 (1.00–2.18) | 0.87 (0.43–1.75) | 1.25 (0.79–1.99) | 0.46 | 1.07 (0.90–1.26) |
Model 2b | 1 (ref) | 1.46 (1.02–2.10) | 1.01 (0.54–1.88) | 1.48 (0.92–2.38) | 0.15 | 1.15 (0.95–1.39) |
Model 3 | 1 (ref) | 1.48 (1.05–2.07) | 1.03 (0.55–1.92) | 1.45 (0.85–2.50) | 0.26 | 1.13 (0.91–1.40) |
BPS | ||||||
Median, ng/mL | 0.07 | 0.20 | 0.47 | 1.29 | ||
Cases of obesity/no. of participants | 56/153 | 65/207 | 64/191 | 77/179 | ||
OR (95% CI) | ||||||
Model 1 | 1 (ref) | 0.85 (0.57–1.29) | 0.91 (0.49–1.71) | 1.17 (0.53–2.57) | 0.61 | 1.07 (0.83–1.37) |
Model 2b | 1 (ref) | 0.89 (0.58–1.36) | 0.93 (0.52–1.65) | 1.13 (0.55–2.32) | 0.71 | 1.05 (0.82–1.34) |
Model 3 | 1 (ref) | 0.90 (0.59–1.38) | 0.85 (0.46–1.57) | 1.06 (0.50–2.28) | 0.85 | 1.02 (0.80–1.31) |
Variable | Sex | Quartile 1 | Quartile 2 | Quartile 3 | Quartile 4 | P for trend | P for interaction |
---|---|---|---|---|---|---|---|
General obesitya | |||||||
BPA | Boys | 1 (ref) | 1.20 (0.65–2.20) | 2.59 (1.25–5.37) | 2.78 (1.07–7.27) | 0.02 | 0.02 |
Girls | 1 (ref) | 2.29 (1.17–4.49) | 1.47 (0.49–4.41) | 1.10 (0.42–2.91) | 0.92 | ||
BPF | Boys | 1 (ref) | 1.78 (0.98–3.25) | 1.76 (0.72–4.31) | 3.35 (2.02–5.53) | <0.001 | <0.001 |
Girls | 1 (ref) | 1.06 (0.50–2.26) | 1.01 (0.60–1.71) | 0.55 (0.25–1.25) | 0.13 | ||
BPS | Boys | 1 (ref) | 0.66 (0.35–1.24) | 0.86 (0.35–2.14) | 1.01 (0.29–3.48) | 0.78 | 0.36 |
Girls | 1 (ref) | 2.63 (0.86–8.11) | 2.20 (0.89–5.42) | 2.14 (0.81–5.68) | 0.23 | ||
Abdominal obesityb | |||||||
BPA | Boys | 1 (ref) | 1.03 (0.51–2.08) | 1.85 (0.90–3.79) | 2.87 (1.60–5.16) | <0.001 | 0.003 |
Girls | 1 (ref) | 0.71 (0.33–1.52) | 0.89 (0.35–2.28) | 0.83 (0.45–1.53) | 0.64 | ||
BPF | Boys | 1 (ref) | 1.22 (0.64–2.31) | 1.19 (0.48–2.96) | 2.11 (1.23–3.62) | 0.01 | 0.04 |
Girls | 1 (ref) | 1.61 (0.81–3.19) | 0.82 (0.42–1.64) | 0.99 (0.50–1.95) | 0.79 | ||
BPS | Boys | 1 (ref) | 0.58 (0.31–1.06) | 0.72 (0.31–1.66) | 1.10 (0.37–3.28) | 0.64 | 0.62 |
Girls | 1 (ref) | 1.34 (0.62–2.89) | 1.20 (0.49–2.93) | 1.34 (0.61–2.94) | 0.55 |
Model 1: adjusted for age (in years), sex (boys, girls), and urinary creatinine (quartiles). Model 2: Model 1+race/ethnicity (Hispanic, non-Hispanic white, non-Hispanic black, and other race), family income (family income to poverty ratio: ≤1.30, 1.31 to 3.50, >3.50, or missing), TV watching (<2 hours/day, ≥2 hours/day), total energy intake (quartiles), and Healthy Eating Index-2010 score (quartiles). Model 3: Model 2+mutual adjustment for BPA, BPF, and BPS. BPA, bisphenol A; BPF, bisphenol F; BPS, bisphenol S; OR, odds ratio; CI, confidence interval. aOR of obesity per unit increase in BPA, BPF, and BPS levels, bModel 2 is the main model.
Model 1: adjusted for age (in years), sex (boys, girls), and urinary creatinine (quartiles). Model 2: Model 1+race/ethnicity (Hispanic, non-Hispanic white, non-Hispanic black, and other race), family income (family income to poverty ratio: ≤1.30, 1.31 to 3.50, >3.50, or missing), TV watching (<2 hours/day, ≥2 hours/day), total energy intake (quartiles), and Healthy Eating Index-2010 score (quartiles). Model 3: Model 2+mutual adjustment for BPA, BPF, and BPS. BPA, bisphenol A; BPF, bisphenol F; BPS, bisphenol S; OR, odds ratio; CI, confidence interval. aOR of obesity per unit increase in BPA, BPF, and BPS levels, bModel 2 is the main model.
Values are presented as odds ratio (95% confidence interval). Adjusted for age (in years), urinary creatinine (quartiles), race/ethnicity (Hispanic, non-Hispanic white, non-Hispanic black, and other race), family income (family income to poverty ratio: ≤1.30, 1.31 to 3.50, >3.50, or missing), TV watching (<2 hours/day, ≥2 hours/day), total energy intake (quartiles), and Healthy Eating Index-2010 score (quartiles). BPA, bisphenol A; BPF, bisphenol F; BPS, bisphenol S. aFor general obesity analysis, the number of participants was 371 for boys and 374 for girls, bFor abdominal obesity analysis, the number of participants was 364 for boys and 366 for girls.