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Phthalate and Bisphenol Exposure During Minipuberty

An Intervention to Reduce Phthalate and Bisphenol Exposure During the Critical Period of Minipuberty

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05864209
Enrollment
10
Registered
2023-05-18
Start date
2023-05-16
Completion date
2024-01-11
Last updated
2025-06-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bisphenol Exposure, Phthalate Exposure

Brief summary

Phthalates and bisphenols have been detected in a range of infant care products. This pilot study will test whether intervening on these sources of exposure during the critical period of minipuberty affects infants' body burden of phthalates and bisphenols. Investigators will recruit 10 participants from the ongoing NYU Children's Health and Development Study (CHES) cohort study who are \>=37 weeks gestation, carrying a male fetus, and intending to breastfeed. Investigators will randomly assign them to use either conventional baby products or phthalate- and bisphenol-free baby products for the first three months of their children's lives. Toward the end of the intervention, investigators will collect maternal breast milk and infant urine, and assay samples for phthalate metabolite and bisphenol concentrations.

Interventions

OTHERPhthalate- and Bisphenol-free Baby Products

3-month supply. Products include wipes and diaper cream.

OTHERCloth Diapers

Subscription to cloth diaper service.

OTHERConventional Disposable Diapers

3-month supply.

OTHERConventional Baby Products

Products include wipes and diaper cream.

Sponsors

NYU Langone Health
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

1. Enrolled in NYU CHES study at the NYULH-Brooklyn campus 2. 18 years of age or older 3. At least 37 weeks gestation 4. Carrying a male singleton fetus 5. Intending to breastfeed 6. English or Spanish speaking 7. Intending for pediatric care for infant to occur at the Sunset Park Family Health Center at NYU Langone

Exclusion criteria

1. Not enrolled in NYU CHES study from the NYULH-Brooklyn campus 2. Under 37 weeks gestation 3. Carrying a female fetus 4. Carrying multiples 5. Not intending to breastfeed 6. Not comfortable communicating in English or Spanish 7. Not intending for pediatric care for infant to occur at NYULH Sunset Park Family Health Center 8. Under 18 years of age

Design outcomes

Primary

MeasureTime frameDescription
Log Signal Intensity of Bisphenol A (BPA) in Child Urine SamplesMonth 3Child urine samples were analyzed for bisphenols and for phthalate metabolites via non-targeted HPLC-MS/MS. The log signal intensity, an arbitrary unit, is a measurement of the signal strength of BPA in child urine; as the concentration of BPA increases, the signal intensity increases proportionally in a logarithmic fashion; higher values indicate greater infant exposure to bisphenol.
Log Signal Intensity of Bisphenol A (BPA) in Maternal Urine SamplesMonth 3Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via non-targeted HPLC-MS/MS. The log signal intensity, an arbitrary unit, is a measurement of the signal strength of BPA in child urine; as the concentration of BPA increases, the signal intensity increases proportionally in a logarithmic fashion; higher values indicate greater maternal exposure to bisphenol.

Secondary

MeasureTime frameDescription
Mean Concentrations of Monomethyl Phthalate (mMP) in Maternal Urine SamplesMonth 3Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Monoethyl Phthalate (mEP) in Child Urine SamplesMonth 3Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Monoethyl Phthalate (mEP) in Maternal Urine SamplesMonth 3Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Phthalic Acid (PA) in Child Urine SamplesMonth 3Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Phthalic Acid (PA) in Maternal Urine SamplesMonth 3Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Mono-(2-ethyl-5-hydroxyhexyl) Phthalate (mEHHP) in Child Urine SamplesMonth 3Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Mono-carboxy-isooctyl Phthalate (mCIOP) in Child Urine SamplesMonth 3Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Mono-carboxy-isooctyl Phthalate (mCIOP) in Maternal Urine SamplesMonth 3Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Monobutyl Phthalate (mBP) in Child Urine SamplesMonth 3Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Monobutyl Phthalate (mBP) in Maternal Urine SamplesMonth 3Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Mono-(2-ethyl-5-hydroxyhexyl) Phthalate (mEHHP) in Maternal Urine SamplesMonth 3Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Mono-iso-butyl Phthalate (mIBP) in Maternal Urine SamplesMonth 3Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Mono(5-carboxy-2-ethylpentyl) Phthalate (mECPP) in Child Urine SamplesMonth 3Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Mono(5-carboxy-2-ethylpentyl) Phthalate (mECPP) in Maternal Urine SamplesMonth 3Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Mono-(2-ethyl-5-oxohexyl) Phthalate (mEOHP) in Child Urine SamplesMonth 3Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Mono-(2-ethyl-5-oxohexyl) Phthalate (mEOHP) in Maternal Urine SamplesMonth 3Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Bisphenol S (BPS) in Child Urine SamplesMonth 3Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Bisphenol S (BPS) in Maternal Urine SamplesMonth 3Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Mono-carboxy-isononyl Phthalate (mCINP) in Maternal Urine SamplesMonth 3Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Ono-carboxy-isononyl Phthalate (mCINP) in Child Urine SamplesMonth 3Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Mono-iso-butyl Phthalate (mIBP) in Child Urine SamplesMonth 3Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.
Mean Concentrations of Monomethyl Phthalate (mMP) in Child Urine SamplesMonth 3Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Countries

United States

Participant flow

Pre-assignment details

Infants were not considered enrolled participants for the purpose of this study; infant urine samples were submitted voluntarily by enrolled (mother) participants at home during follow-up. Participant information (participant flow, baseline characteristics) are thus not reported for infants.

Participants by arm

ArmCount
Intervention Group
Half of the participants will be randomly assigned to the intervention group and will receive a three-month supply of phthalate- and bisphenol-free baby products (e.g., wipes, diaper cream) and a subscription to a cloth diaper service. Participants will be contacted after 2 and 6 weeks over the phone and administered a brief adherence survey. Phthalate- and Bisphenol-free Baby Products: 3-month supply. Products include wipes and diaper cream. Cloth Diapers: Subscription to cloth diaper service.
3
Control Group
Half of the participants will be randomly assigned to the control group and provided with a three-month supply of conventional disposable diapers (e.g., Huggies or Pampers) and baby products (e.g., wipes, diaper cream). Participants will be contacted after 2 and 6 weeks over the phone and administered a brief adherence survey. Conventional Disposable Diapers: 3-month supply. Conventional Baby Products: Products include wipes and diaper cream.
2
Total5

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyLost to Follow-up23

Baseline characteristics

CharacteristicIntervention GroupTotalControl Group
Age, Continuous27.02 years
STANDARD_DEVIATION 3.96
30.023 years
STANDARD_DEVIATION 8.58
33.025 years
STANDARD_DEVIATION 13.2
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants5 Participants2 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
0 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
3 Participants5 Participants2 Participants
Race (NIH/OMB)
White
0 Participants0 Participants0 Participants
Region of Enrollment
United States
3 participants5 participants2 participants
Sex: Female, Male
Female
3 Participants5 Participants2 Participants
Sex: Female, Male
Male
0 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 50 / 5
other
Total, other adverse events
0 / 50 / 5
serious
Total, serious adverse events
0 / 50 / 5

Outcome results

Primary

Log Signal Intensity of Bisphenol A (BPA) in Child Urine Samples

Child urine samples were analyzed for bisphenols and for phthalate metabolites via non-targeted HPLC-MS/MS. The log signal intensity, an arbitrary unit, is a measurement of the signal strength of BPA in child urine; as the concentration of BPA increases, the signal intensity increases proportionally in a logarithmic fashion; higher values indicate greater infant exposure to bisphenol.

Time frame: Month 3

Population: 3 out of 5 participants in the intervention group and 2 out of 5 in the control group were analyzed as the rest did not provide samples

ArmMeasureValue (MEAN)Dispersion
Intervention GroupLog Signal Intensity of Bisphenol A (BPA) in Child Urine Samples0.00 Log(Arbitrary Units)Standard Deviation 0
Control GroupLog Signal Intensity of Bisphenol A (BPA) in Child Urine Samples5.43 Log(Arbitrary Units)Standard Deviation 0.16
Primary

Log Signal Intensity of Bisphenol A (BPA) in Maternal Urine Samples

Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via non-targeted HPLC-MS/MS. The log signal intensity, an arbitrary unit, is a measurement of the signal strength of BPA in child urine; as the concentration of BPA increases, the signal intensity increases proportionally in a logarithmic fashion; higher values indicate greater maternal exposure to bisphenol.

Time frame: Month 3

Population: 3 out of 5 participants in the intervention group and 2 out of 5 in the control group were analyzed as the rest did not provide samples

ArmMeasureValue (MEAN)Dispersion
Intervention GroupLog Signal Intensity of Bisphenol A (BPA) in Maternal Urine Samples3.49 Log(Arbitrary Units)Standard Deviation 2.47
Control GroupLog Signal Intensity of Bisphenol A (BPA) in Maternal Urine Samples4.74 Log(Arbitrary Units)Standard Deviation 0.4
Secondary

Mean Concentrations of Bisphenol S (BPS) in Child Urine Samples

Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: Only one intervention and one control sample was collected for child urine

ArmMeasureValue (MEAN)
Intervention GroupMean Concentrations of Bisphenol S (BPS) in Child Urine Samples2.09 microgram/gram creatinine
Control GroupMean Concentrations of Bisphenol S (BPS) in Child Urine Samples1.61 microgram/gram creatinine
Secondary

Mean Concentrations of Bisphenol S (BPS) in Maternal Urine Samples

Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: 2 out of 5 participants in the intervention group and 2 out of 5 in the control group were analyzed as the rest did not provide samples

ArmMeasureValue (MEAN)Dispersion
Intervention GroupMean Concentrations of Bisphenol S (BPS) in Maternal Urine Samples1.80 microgram/gram creatinineStandard Deviation 0.82
Control GroupMean Concentrations of Bisphenol S (BPS) in Maternal Urine Samples0.57 microgram/gram creatinineStandard Deviation 0.58
Secondary

Mean Concentrations of Mono-(2-ethyl-5-hydroxyhexyl) Phthalate (mEHHP) in Child Urine Samples

Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: Only one intervention and one control sample was collected for child urine

ArmMeasureValue (MEAN)
Intervention GroupMean Concentrations of Mono-(2-ethyl-5-hydroxyhexyl) Phthalate (mEHHP) in Child Urine Samples0.42 microgram/gram creatinine
Control GroupMean Concentrations of Mono-(2-ethyl-5-hydroxyhexyl) Phthalate (mEHHP) in Child Urine Samples6.81 microgram/gram creatinine
Secondary

Mean Concentrations of Mono-(2-ethyl-5-hydroxyhexyl) Phthalate (mEHHP) in Maternal Urine Samples

Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: 3 out of 5 participants in the intervention group and 2 out of 5 in the control group were analyzed as the rest did not provide samples

ArmMeasureValue (MEAN)Dispersion
Intervention GroupMean Concentrations of Mono-(2-ethyl-5-hydroxyhexyl) Phthalate (mEHHP) in Maternal Urine Samples8.15 microgram/gram creatinineStandard Deviation 7.19
Control GroupMean Concentrations of Mono-(2-ethyl-5-hydroxyhexyl) Phthalate (mEHHP) in Maternal Urine Samples2.43 microgram/gram creatinineStandard Deviation 0.98
Secondary

Mean Concentrations of Mono-(2-ethyl-5-oxohexyl) Phthalate (mEOHP) in Child Urine Samples

Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: Only one intervention and one control sample was collected for child urine

ArmMeasureValue (MEAN)
Intervention GroupMean Concentrations of Mono-(2-ethyl-5-oxohexyl) Phthalate (mEOHP) in Child Urine Samples0.39 microgram/gram creatinine
Control GroupMean Concentrations of Mono-(2-ethyl-5-oxohexyl) Phthalate (mEOHP) in Child Urine Samples5.06 microgram/gram creatinine
Secondary

Mean Concentrations of Mono-(2-ethyl-5-oxohexyl) Phthalate (mEOHP) in Maternal Urine Samples

Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: 3 out of 5 participants in the intervention group and 2 out of 5 in the control group were analyzed as the rest did not provide samples

ArmMeasureValue (MEAN)Dispersion
Intervention GroupMean Concentrations of Mono-(2-ethyl-5-oxohexyl) Phthalate (mEOHP) in Maternal Urine Samples4.34 microgram/gram creatinineStandard Deviation 3.16
Control GroupMean Concentrations of Mono-(2-ethyl-5-oxohexyl) Phthalate (mEOHP) in Maternal Urine Samples1.37 microgram/gram creatinineStandard Deviation 0.49
Secondary

Mean Concentrations of Mono(5-carboxy-2-ethylpentyl) Phthalate (mECPP) in Child Urine Samples

Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: Only one intervention and one control sample was collected for child urine

ArmMeasureValue (MEAN)
Intervention GroupMean Concentrations of Mono(5-carboxy-2-ethylpentyl) Phthalate (mECPP) in Child Urine Samples2.51 microgram/gram creatinine
Control GroupMean Concentrations of Mono(5-carboxy-2-ethylpentyl) Phthalate (mECPP) in Child Urine Samples20.00 microgram/gram creatinine
Secondary

Mean Concentrations of Mono(5-carboxy-2-ethylpentyl) Phthalate (mECPP) in Maternal Urine Samples

Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: 3 out of 5 participants in the intervention group and 2 out of 5 in the control group were analyzed as the rest did not provide samples

ArmMeasureValue (MEAN)Dispersion
Intervention GroupMean Concentrations of Mono(5-carboxy-2-ethylpentyl) Phthalate (mECPP) in Maternal Urine Samples8.27 microgram/gram creatinineStandard Deviation 6.6
Control GroupMean Concentrations of Mono(5-carboxy-2-ethylpentyl) Phthalate (mECPP) in Maternal Urine Samples3.06 microgram/gram creatinineStandard Deviation 0.58
Secondary

Mean Concentrations of Monobutyl Phthalate (mBP) in Child Urine Samples

Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: Only one intervention and one control sample was collected for child urine.

ArmMeasureValue (MEAN)
Intervention GroupMean Concentrations of Monobutyl Phthalate (mBP) in Child Urine Samples62.77 microgram/gram creatinine
Control GroupMean Concentrations of Monobutyl Phthalate (mBP) in Child Urine Samples37.40 microgram/gram creatinine
Secondary

Mean Concentrations of Monobutyl Phthalate (mBP) in Maternal Urine Samples

Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: 3 out of 5 participants in the intervention group and 2 out of 5 in the control group were analyzed as the rest did not provide samples

ArmMeasureValue (MEAN)Dispersion
Intervention GroupMean Concentrations of Monobutyl Phthalate (mBP) in Maternal Urine Samples18.02 microgram/gram creatinineStandard Deviation 7.21
Control GroupMean Concentrations of Monobutyl Phthalate (mBP) in Maternal Urine Samples21.75 microgram/gram creatinineStandard Deviation 19.88
Secondary

Mean Concentrations of Mono-carboxy-isononyl Phthalate (mCINP) in Maternal Urine Samples

Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: 2 out of 5 participants in the intervention group and 2 out of 5 in the control group were analyzed as the rest did not provide samples

ArmMeasureValue (MEAN)Dispersion
Intervention GroupMean Concentrations of Mono-carboxy-isononyl Phthalate (mCINP) in Maternal Urine Samples0.59 microgram/gram creatinineStandard Deviation 0.31
Control GroupMean Concentrations of Mono-carboxy-isononyl Phthalate (mCINP) in Maternal Urine Samples1.52 microgram/gram creatinineStandard Deviation 1.92
Secondary

Mean Concentrations of Mono-carboxy-isooctyl Phthalate (mCIOP) in Child Urine Samples

Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: 3 out of 5 participants in the intervention group anf 2 out of 5 in the control group were analyzed as the rest did not provide samples

ArmMeasureValue (MEAN)
Intervention GroupMean Concentrations of Mono-carboxy-isooctyl Phthalate (mCIOP) in Child Urine Samples0.50 microgram/gram creatinine
Control GroupMean Concentrations of Mono-carboxy-isooctyl Phthalate (mCIOP) in Child Urine Samples2.92 microgram/gram creatinine
Secondary

Mean Concentrations of Mono-carboxy-isooctyl Phthalate (mCIOP) in Maternal Urine Samples

Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: 3 out of 5 participants in the intervention group and 2 out of 5 in the control group were analyzed as the rest did not provide samples

ArmMeasureValue (MEAN)Dispersion
Intervention GroupMean Concentrations of Mono-carboxy-isooctyl Phthalate (mCIOP) in Maternal Urine Samples1.90 microgram/gram creatinineStandard Deviation 1.25
Control GroupMean Concentrations of Mono-carboxy-isooctyl Phthalate (mCIOP) in Maternal Urine Samples2.12 microgram/gram creatinineStandard Deviation 1.08
Secondary

Mean Concentrations of Monoethyl Phthalate (mEP) in Child Urine Samples

Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: Only one intervention and one control sample was collected for child urine

ArmMeasureValue (MEAN)
Intervention GroupMean Concentrations of Monoethyl Phthalate (mEP) in Child Urine Samples129.68 microgram/gram creatinine
Control GroupMean Concentrations of Monoethyl Phthalate (mEP) in Child Urine Samples1649.72 microgram/gram creatinine
Secondary

Mean Concentrations of Monoethyl Phthalate (mEP) in Maternal Urine Samples

Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: 3 out of 5 participants in the intervention group and 2 out of 5 in the control group were analyzed as the rest did not provide samples

ArmMeasureValue (MEAN)Dispersion
Intervention GroupMean Concentrations of Monoethyl Phthalate (mEP) in Maternal Urine Samples89.40 microgram/gram creatinineStandard Deviation 74.36
Control GroupMean Concentrations of Monoethyl Phthalate (mEP) in Maternal Urine Samples53.30 microgram/gram creatinineStandard Deviation 8.78
Secondary

Mean Concentrations of Mono-iso-butyl Phthalate (mIBP) in Child Urine Samples

Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: Only one intervention and one control sample was collected for child urine

ArmMeasureValue (MEAN)
Intervention GroupMean Concentrations of Mono-iso-butyl Phthalate (mIBP) in Child Urine Samples74.45 microgram/gram creatinine
Control GroupMean Concentrations of Mono-iso-butyl Phthalate (mIBP) in Child Urine Samples28.25 microgram/gram creatinine
Secondary

Mean Concentrations of Mono-iso-butyl Phthalate (mIBP) in Maternal Urine Samples

Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: 3 out of 5 participants in the intervention group and 2 out of 5 in the control group were analyzed as the rest did not provide samples

ArmMeasureValue (MEAN)Dispersion
Intervention GroupMean Concentrations of Mono-iso-butyl Phthalate (mIBP) in Maternal Urine Samples13.07 microgram/gram creatinineStandard Deviation 10.02
Control GroupMean Concentrations of Mono-iso-butyl Phthalate (mIBP) in Maternal Urine Samples10.12 microgram/gram creatinineStandard Deviation 7.04
Secondary

Mean Concentrations of Monomethyl Phthalate (mMP) in Child Urine Samples

Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: Only one intervention and one control sample was collected for child urine

ArmMeasureValue (MEAN)
Intervention GroupMean Concentrations of Monomethyl Phthalate (mMP) in Child Urine Samples27.23 microgram/gram creatinine
Control GroupMean Concentrations of Monomethyl Phthalate (mMP) in Child Urine Samples13.79 microgram/gram creatinine
Secondary

Mean Concentrations of Monomethyl Phthalate (mMP) in Maternal Urine Samples

Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: 3 out of 5 participants in the intervention group anf 2 out of 5 in the control group were analyzed as the rest did not provide samples

ArmMeasureValue (MEAN)Dispersion
Intervention GroupMean Concentrations of Monomethyl Phthalate (mMP) in Maternal Urine Samples2.91 microgram/gram creatinineStandard Deviation 2.66
Control GroupMean Concentrations of Monomethyl Phthalate (mMP) in Maternal Urine Samples5.10 microgram/gram creatinineStandard Deviation 0.41
Secondary

Mean Concentrations of Ono-carboxy-isononyl Phthalate (mCINP) in Child Urine Samples

Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: Only one intervention and one control sample was collected for child urine

ArmMeasureValue (MEAN)
Intervention GroupMean Concentrations of Ono-carboxy-isononyl Phthalate (mCINP) in Child Urine Samples0.61 microgram/gram creatinine
Control GroupMean Concentrations of Ono-carboxy-isononyl Phthalate (mCINP) in Child Urine Samples1.06 microgram/gram creatinine
Secondary

Mean Concentrations of Phthalic Acid (PA) in Child Urine Samples

Child urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: Only one intervention and one control sample was collected for child urine

ArmMeasureValue (MEAN)
Intervention GroupMean Concentrations of Phthalic Acid (PA) in Child Urine Samples24.18 microgram/gram creatinine
Control GroupMean Concentrations of Phthalic Acid (PA) in Child Urine Samples161.58 microgram/gram creatinine
Secondary

Mean Concentrations of Phthalic Acid (PA) in Maternal Urine Samples

Maternal urine samples were analyzed for bisphenols and for phthalate metabolites via targeted LC-MS/MS.

Time frame: Month 3

Population: 3 out of 5 participants in the intervention group anf 2 out of 5 in the control group were analyzed as the rest did not provide samples

ArmMeasureValue (MEAN)Dispersion
Intervention GroupMean Concentrations of Phthalic Acid (PA) in Maternal Urine Samples63.96 microgram/gram creatinineStandard Deviation 91.12
Control GroupMean Concentrations of Phthalic Acid (PA) in Maternal Urine Samples211.21 microgram/gram creatinineStandard Deviation 126.69

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026