Baby's First Years

Last registered on August 16, 2022

Pre-Trial

Trial Information

General Information

Title
Baby's First Years
RCT ID
AEARCTR-0003262
Initial registration date
June 21, 2019

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
July 02, 2019, 5:30 PM EDT

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Last updated
August 16, 2022, 8:03 PM EDT

Last updated is the most recent time when changes to the trial's registration were published.

Locations

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Primary Investigator

Affiliation
University of California, Irvine

Other Primary Investigator(s)

PI Affiliation
University of Maryland
PI Affiliation
New York University
PI Affiliation
University of Wisconsin, Madison
PI Affiliation
Teachers College Columbia University
PI Affiliation
Duke University

Additional Trial Information

Status
On going
Start date
2018-05-09
End date
2024-07-31
Secondary IDs
CTR NCT03593356
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
In the Baby’s First Years (BFY) study, one thousand infants born to mothers with incomes falling below the federal poverty threshold in four metropolitan areas in the United States were assigned at random within each of the metropolitan areas to one of two cash gift conditions. The sites are: New York City, the greater New Orleans metropolitan area, the greater Omaha metropolitan area, and the Twin Cities. IRB and recruiting issues led to a distribution of the 1,000 mothers across sites of 121 in one site (the Twin Cities), 295 in two of the other sites (New Orleans and Omaha) and 289 in New York. (We have also randomly sampled 80 of the participating families in the Twin Cities and New Orleans to participate in an in-depth qualitative study, but do not elaborate on those plans in this document.)
Mothers were recruited in maternity wards of the 12 participating hospitals shortly after giving birth and, after consenting, were administered a 30-minute baseline interview. They then were asked to consent to the cash gifts. The “high-cash gift” treatment group mothers (40% of all mothers) are receiving unconditioned cash payments of $333 per month ($4,000 per year) via debit care for 52 months. Mothers in the “low-cash gift” comparator group (60% of all mothers) are receiving a nominal payment – $20 per month, delivered in the same way and also for 52 months. The 40/60 randomization assignment is stratified by site, but not by hospitals, within each of the four sites.
BFY was originally formulated to study the effects of monthly unconditional cash transfers on child development for the first three years of life, with the cash gifts set to be distributed for 40 months (3 years, 4 months). In response to the COVID-19 pandemic and the need to postpone in-person research activities, the cash transfers were extended for an additional year, through 52 months (4 years, 4 months), enabling us to postpone in-person direct child assessments to age 4. Interviews conducted at child ages 1, 2 and 3 are providing information about family functioning as well as several maternal reports of developmentally-appropriate measures of children’s cognitive and behavioral development. The current analysis plan includes lab-based assessments at child age 4.
Conditional on participants’ consent and our success in securing agreements with state and county agencies, we are also collecting state and local administrative data regarding parental employment, utilization of public benefits such as Medicaid and Supplemental Nutrition Assistance Programs (SNAP), and any involvement in child protective services. (We have worked with state and local officials to ensure to the extent feasible that our cash gifts are not considered countable income for the purposes of determining benefit levels from social assistance programs.)
The compensation difference between families in the high and low cash gift groups will boost family incomes by $3,760 per year, an amount shown in the economics and developmental psychology literatures to be associated with socially significant and policy relevant improvements in children’s school achievement. After accounting for likely attrition, our total sample size of 800 at age 4 years, divided 40/60 between high and low payment groups, provides sufficient statistical power to detect meaningful differences in cognitive, emotional and brain functioning, and key dimensions of family context (see below).
At the age 4 lab visit we will administer validated, reliable and developmentally sensitive measures of language, executive functioning and socioemotional skills. We will also collect direct EEG- and ERP-based measures of young children’s brain development at age 4. Measures and preregistered hypotheses about them as well as family-based measures are shown in the two tables at the end of this document. Child-focused preregistered hypotheses are presented in Appendix Table 7 and maternal and family focused preregistered hypotheses are presented in Appendix Table 8.
The family process measures that we will gather are based on two theories of change surrounding the income supplements: that increased investment and reduced stress will facilitate children’s healthy development. We are obtaining measures of both of these pathways annually. Investment pathway: Additional resources enable parents to buy goods and services for their families and children that support cognitive development. These include higher quality housing, nutrition and non-parental child care; more cognitively stimulating home environments and learning opportunities outside of the home; and, by reducing or restructuring work hours, more parental time spent with children. Stress pathway: A second pathway is that additional economic resources may reduce parents’ own stress and improve their mental health. This may allow parents to devote more positive attention to their children, thus providing a more predictable family life, less conflicted relationships, and warmer and more responsive interactions.


For current information about the study, please see babysfirstyears.com. Publicly available data from the baseline survey and Age 1 can be found here: https://www.icpsr.umich.edu/web/ICPSR/studies/37871.
External Link(s)

Registration Citation

Citation
Duncan, Greg et al. 2022. "Baby's First Years." AEA RCT Registry. August 16. https://doi.org/10.1257/rct.3262
Former Citation
Duncan, Greg et al. 2022. "Baby's First Years." AEA RCT Registry. August 16. https://www.socialscienceregistry.org/trials/3262/history/153233
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Experimental Details

Interventions

Intervention(s)
We are randomly assigning 1,000 US low-income mothers and their newborns in four ethnically and geographically diverse metropolitan areas to either (1) an experimental group that receives $333 in cash payments each month ($4,000 each year) for each of the first 52 months of the children’s lives, with the first payments occurring shortly after the baby’s birth and this experimental condition offered to 40% of the participants, or (2) an active comparator group that receives much smaller payments ($20 per month) offered to 60% of participants. Based on our and others’ prior work, the $3,760 annual difference will be large enough to produce and detect meaningful differences in children’s cognitive development.

Moreover, to understand how poverty reduction improves brain functioning, we have four follow-up waves of data collection conducted at child ages 12, 24, 36, and 48 months. Cognitive and emotional development measures will be gathered at 12, 24, 36, and 48 months of age. At the age-48 month lab visit we will administer validated, reliable and developmentally sensitive measures of language, memory, executive functioning and socioemotional skills. We will also collect direct measures of young children’s brain development at ages 1 and 48 months.

The family process measures that we will gather are based on two theories of change surrounding the income supplements: that increased investment and reduced stress will facilitate children’s healthy development. We will obtain data measuring both of these pathways annually. Investment pathway: Additional resources enable parents to buy goods and services for their families and children that support cognitive development. These include higher quality housing, nutrition and non-parental child care; more cognitively stimulating home environments and learning opportunities outside of the home; and, by reducing or restructuring work hours, more parental time spent with children. Stress pathway: A second pathway is that additional economic resources may reduce parents’ own stress and improve their mental health. This may allow parents to devote more positive attention to their children, thus providing a more predictable family life, less conflicted relationships, and warmer and more responsive interactions.

We have worked with state and local officials to ensure to the extent feasible that our cash gifts are not considered countable income for the purposes of determining benefit levels from social assistance programs.
Intervention Start Date
2018-05-09
Intervention End Date
2023-06-30

Primary Outcomes

Primary Outcomes (end points)
1. Child Language Development: Vocabulary [Age 48 months]
2. Child Language Development: Maternal Concern for Language Delay [Age 36 months]
3. Child Executive Function & Behavioral Regulation: Executive Function [Age 48 months]
4. Child Socio-Emotional Processing: Behavior/Problems [Age 36 months]
5. Child Socio-Emotional Processing: Behavior/Problems [Age 48 months]
6. Child Socio-Emotional Processing: Maternal Concern for Behavioral and Social-Emotional Problems [Age 36 months]
7. Child Intelligence Quotient [Age 48 months]
8. Child Resting Brain Function: Resting Brain Function [Age 48 months]
9. Child Health, Sleep [Age 36 months]
10. Child Health, Other Indicators [Age 36 months]
11. Diagnosis of Developmental Condition [Age 48 months]
12. School Achievement and Behavior: School Test Scores for Target Child [Starting at child age 6 years]


Primary Outcomes (explanation)
Here we list primary outcome measures. Details can be found in Appendix Tables 7 and 8 of the "Analysis Plan and Measures" document.

1. Child Language Development: Vocabulary [Age 48 months] measured by Receptive One Word Picture Vocabulary Test (ROWPVT).
2. Child Language Development: Maternal Concern for Language Delay [Age 36 months] measured by the sum of the two questions from the Parents' Evaluation of Developmental Status (PEDS).
3. Child Executive Function & Behavioral Regulation: Executive Function [Age 48 months] measured by Minnesota Executive Function Scale.
4. Child Socio-Emotional Processing: Behavior/Problems [Age 36 months] measured by Child Behavior Checklist (CBCL).
5. Child Socio-Emotional Processing: Behavior/Problems [Age 48 months] measured by Child Behavior Checklist (CBCL).
6. Child Socio-Emotional Processing: Maternal Concern for Behavioral and Social-Emotional Problems [Age 36 months] measured by the sum of two questions included in the Parents' Evaluation of Developmental Status (PEDS).
7. Child Intelligence Quotient [Age 48 months] measured by the Wechsler Nonverbal Scale of Ability.
8. Child Resting Brain Function: Resting Brain Function [Age 48 months] measured by high-density in-lab electroencephalography.
9. Child Health, Sleep [Age 36 months] measured by an adapted Short Form of Patient-Reported Outcomes Measurement Information System (PROMIS™).
10. Child Health, Other Indicators [Age 36 months] measured by an index of survey items.
11. Diagnosis of Developmental Condition [Age 48 months] measured by one dichotomous survey item
12. School Achievement and Behavior: School Test Scores for Target Child [Starting at child age 6 years] measured by administrative data of target child's test scores.


Secondary Outcomes

Secondary Outcomes (end points)
Secondary outcomes
1. Child Language Development: Language Milestones [Age 12 months]
2. Child Language Development: Vocabulary [Age 24 months]
3. Child Executive Function: Executive Function [Age 48 months]
4. Child Socio-Emotional Processing: Behavior [Age 12 months]
5. Child Socio-Emotional Processing: Problems [Age 12 months]
6. Child Socio-Emotional Processing: Problems [Age 24 months]
7. Child Pre-Literacy: Pre-Literacy [Age 48 months]
8. Child Resting Brain Function [Age 12 months]
9. Child Resting Brain Function [Age 48 months]
10. Child Task-Related Brain Function [Age 48 months]
11. Child Health: BMI [Age 48 months]
12. Child Health, Physiological Stress [Age 48 months]
13. Child Health, Sleep [Age 12 Months]
14. Child Health, Sleep [Age 24 months]
15. Child Health, Other Indicators: Overall health, medical care, diagnosis of condition or disability [Age 12 months]
16. Child Health, Other Indicators: Overall health, medical care, diagnosis of condition or disability [Age 24 months]
17. Child Health, Other Indicators: Overall Health, Diagnosis of Condition or Disability [Age 48 months]
18. Child Epigenetic Age: Methylation pace of aging [Age 48 months]
19. Child DNA Methylation [Age 48 months]
20. Child Nutrition: Consumption of healthy foods [Age 24 months]
21. Child Nutrition: Consumption of unhealthy foods [Age 24 months]
22. Any Maternal Concern for Developmental Delay: Total "predictive concerns" in the Parents' Evaluation of Developmental Status (PEDS) [Age 36 months]
23. Any Maternal Concern for Developmental Delay: Parents' Evaluation of Developmental Status (PEDS) [Age 36 months]
24. School Achievement and Behavior: School Test Scores for Target Child's Siblings [Starting at child age 6 years]
25. School Achievement and Behavior: Student Behavioral Data for Target Child [Starting at child age 6 years]
26. School Achievement and Behavior: Student Behavioral Data for Target Child's Siblings [Starting at child age 6 years]
27. Household Economic Hardship: Household Poverty Rate [Age 12 months]
28. Household Economic Hardship: Index of Economic Stress [Age 12 months]
29. Household Economic Hardship: Index of Food Insecurity [Age 12 months]
30. Household Economic Hardship: Index of Economic Stress [Age 24 months]
31. Household Economic Hardship: Household Poverty Rate [Age 24 months]
32. Household Economic Hardship: Index of Food Insecurity [Age 24 months]
33. Household Economic Hardship: Index of Economic Stress [Age 36 months]
34. Household Economic Hardship: Household Poverty Rate [Age 36 months]
35. Household Economic Hardship: Index of Food Insecurity [Age 36 months]
36. Household Economic Hardship: Household Poverty Rate [Age 48 months]
37. Household Economic Hardship: Index of Economic Stress [Age 48 months]
38. Household Economic Hardship: Index of Food Insecurity [Age 48 months]
39. Social Services Receipt; Number of Benefits Received by Mother [Age 12 months]
40. Social Services Receipt; Number of Benefits Received by Mother [Age 24 months]
41. Social Services Receipt; Number of Benefits Received by Mother [Age 36 months]
42. Mother's Labor Market and Education Participation: Time to Labor Market Re-entry from Birth [Age 12 months]
43. Mother's Labor Market and Education Participation: Time to Full-Time Labor Market Reentry from Birth [Age 12 months]
44. Mother's Labor Market and Education Participation: Mother's Education and Training Attainment [Age 12 months]
45. Mother's Labor Market and Education Participation: Mother's Education and Training Attainment [Age 24/36 months]
46. Mother's earnings in previous calendar year [Age 48 months]
47. Mother's Labor Market and Education Participation: Mother's Labor Market Participation [Age 48 months]
48. Child-Focused Expenditures: Index of Expenditures since birth [Age 12 months]
49. Child-Focused Expenditures: Index of Expenditures in past 30 days [Age 12 months]
50. Child-Focused Expenditures: Index of Expenditures in past 30 days [Age 24 months]
51. Child-Focused Expenditures: Index of Expenditures in past 30 days [Age 36 months]
52. Child-Focused Expenditures: Index of Expenditures in past 30 days [Age 48 months]
53. Child-Focused Expenditures: Cost of Paid Child Care [Age 12 months]
54. Child-Focused Expenditures: Cost of Paid Child Care [Age 24 months]
55. Child-Focused Expenditures: Cost of Paid Child Care [Age 36 months]
56. Child-Focused Expenditures: Cost of Paid Child Care [Age 48 months]
57. Child-Focused Expenditures: Use of Center-Based Care [Age 12 months]
58. Child-Focused Expenditures: Use of Center-Based Care [Age 24 months]
59. Child-Focused Expenditures: Use of Center-Based Care [Age 36 months]
60. Child-Focused Expenditures: Use of Center-Based Care [Age 48 months]
61. Housing and Neighborhoods: Index of Perceptions of Neighborhood Safety [Age 12 months]
62. Housing and Neighborhoods: Index of Perceptions of Neighborhood Safety [Age 24 months]
63. Housing and Neighborhoods: Index of Perceptions of Neighborhood Safety [Age 36 months]
64. Housing and Neighborhoods: Index of Housing Quality [Age 12 months]
65. Housing and Neighborhoods: Index of Housing Quality [Age 24 months]
66. Housing and Neighborhoods: Excessive Residential Mobility [Age 12 months]
67. Housing and Neighborhoods: Excessive Residential Mobility [Age 24 months]
68. Housing and Neighborhoods: Excessive Residential Mobility [Age 36 months]
69. Housing and Neighborhoods: Homelessness [Age 12 months]
70. Housing and Neighborhoods: Homelessness [Age 24 months]
71. Housing and Neighborhoods: Homelessness [Age 36 months]
72. Housing and Neighborhoods: Homelessness [Age 48 months]
73. Housing and Neighborhoods: Neighborhood Poverty [Age 12 months]
74. Housing and Neighborhoods: Neighborhood Poverty [Age 24 months]
75. Housing and Neighborhoods: Neighborhood Poverty [Age 36 months]
76. Housing and Neighborhoods: Neighborhood Poverty [Age 48 months]
77. Family and Maternal Perceived Stress: Perceived Stress [Age 12 months]
78. Family and Maternal Perceived Stress: Perceived Stress [Age 24 months]
79. Family and Maternal Perceived Stress: Parenting Stress [Age 24 months]
80. Family and Maternal Perceived Stress: Perceived Stress [Age 36 months]
81. Family and Maternal Perceived Stress: Parenting Stress [Age 12 months]
82. Family and Maternal Perceived Stress: Parenting Stress [Age 48 months]
83. Maternal Happiness and Optimism: Global Happiness [Age 12 months]
84. Maternal Happiness and Optimism: Global Happiness [Age 24 months]
85. Maternal Happiness and Optimism: Global Happiness [Age 36 months]
86. Maternal Happiness and Optimism: Maternal Agency [Age 12 months]
87. Maternal Happiness and Optimism: Maternal Agency [Age 24 months]
88. Maternal Happiness and Optimism: Maternal Agency [Age 36 months]
89. Maternal Physiological Stress: Maternal Hair Cortisol [Age 12 months]
90. Maternal Physiological Stress: Maternal Hair Cortisol [Age 48 months]
91. Maternal Mental Resources: Maternal Cognitive Resources [Age 48 months]
92. Maternal Mental Health: Index of Maternal Depression [Age 12 months]
93. Maternal Mental Health: Index of Maternal Depression [Age 24 months]
94. Maternal Mental Health: Index of Maternal Depression [Age 36 months]
95. Maternal Mental Health: Index of Maternal Depression [Age 48 months]
96. Maternal Mental Health: Index of Maternal Anxiety [Age 12 months]
97. Maternal Mental Health: Index of Maternal Anxiety [Age 24 months]
98. Maternal Mental Health: Index of Maternal Anxiety [Age 36 months]
99. Maternal Mental Health: Index of Maternal Anxiety [Age 36 months]
100. Maternal Mental Health: Index of Maternal Anxiety [Age 48 months]
101. Maternal Substance Abuse: Alcohol and Cigarette Use [Age 12 months]
102. Maternal Substance Abuse: Alcohol and Cigarette Use [Age 36 months]
103. Maternal Substance Abuse: Opioid Use [Age 12 months]
104. Maternal Substance Abuse: Opioid Use [Age 36 months]
105. Chaos in the Home: Index of Chaos in the Home [Age 12 months]
106. Chaos in the Home: Index of Chaos in the Home [Age 24 months]
107. Maternal Relationships: Physical Abuse [Age 12 months]
108. Maternal Relationships: Physical Abuse [Age 24 months]
109. Maternal Relationships: Frequency of Arguing [Age 12 months]
110. Maternal Relationships: Frequency of Arguing [Age 24 months]
111. Maternal Relationships: Relationship Quality [Age 12 months]
112. Maternal Relationships: Relationship Quality [Age 24 months]
113. Maternal Relationships: Relationship Quality [Age 36 months]
114. Maternal Relationships: Relationship Quality [Age 48 months]
115. Maternal Physical Health: Global Health [Age 12 months]
116. Maternal Physical Health: Global Health [Age 24 months]
117. Maternal Physical Health: Sleep [Age 12 months]
118. Maternal Physical Health: Sleep [Age 36 months]
119. Maternal Physical Health: Body Mass Index [Age 48 months]
120. Parent-Child Interaction Quality: Adult Word Count [Age 12 months]
121. Parent-Child Interaction Quality: Conversational Turns [Age 12 months]
122. Parent-Child Interaction Quality: Index of Mother's Positive Parenting Behaviors [Age 12 months]
123. Parent-Child Interaction Quality: Index of Mother's Positive Parenting Behaviors [Age 48 months]
124. Maternal Epigenetic Age [Age 48 months]
125. Maternal DNA Methylation [Age 48 months]
126. Frequency of Parent-Child Activity: Self-Report of Parent-Child Activities [Age 12 months]
127. Frequency of Parent-Child Activity: Self-Report of Parent-Child Activities [Age 24 months]
128. Frequency of Parent-Child Activity: Self-Report of Parent-Child Activities [Age 36 months]
129. Frequency of Parent-Child Activity: Time on mother-focal child activities [Age 48 months]
130. Frequency of Parent-Child Activity: Child meal and sleep routine index [Age 48 months]
131. Maternal Discipline: Spanking Discipline Strategy [Age 12 months]
132. Maternal Discipline: Spanking Discipline Strategy [Age 24 months]
133. Maternal Discipline: Spanking Discipline

Secondary Outcomes (explanation)
For explanations of all secondary outcomes, please see Appendix Tables 7 and 8 of "Analysis Plan and Measures".

Experimental Design

Experimental Design
There are two arms of interventions. The experimental group or high cash gift group (compromising 40% of all participants) receives a monthly $333 cash gift for 52 months via debit card. The comparison group or low cash gift group (compromising 60% of all participants) receives a monthly $20 cash gift for 52 months via debit card. Interviewers are aware of experimental status at enrollment in order to activate the debit card after the participant consents to the study.

Experimental Design Details
Not available
Randomization Method
Computer-randomized and computer-accessed lists of experimental and control status for participants in each for the four sites. Interviewers are notified of experimental/control data during their enrollment interviews. All of the four metropolitan sites will have a 40/60 distribution of experimental and control cases.
Randomization Unit
Individual
Was the treatment clustered?
Yes

Experiment Characteristics

Sample size: planned number of clusters
4 metropolitan areas
Sample size: planned number of observations
1,000 mother/infant pairs, recruited in hospitals shortly after birth. Inclusion conditions (all must be met) include: 1. mother 18 years or older 2. household income below the federal poverty threshold in the calendar year prior to the interview, counting the newborn 3. infant admitted to the newborn nursery and not requiring admittance to the intensive care unit 4. residence in the state of recruitment 5. mother reports not "highly likely" to move to a different state or country in the next 12 months 6. infant to be discharged in the custody of the mother 7. Mother English or Spanish speaking (necessary for administration of instruments used to measure some of the child outcomes)
Sample size (or number of clusters) by treatment arms
400 in experimental group; 600 in control group. In New York City, we recruited 289 mother-infant dyads. We recruited 295 mother-infant dyads in the Omaha metropolitan area and the New Orleans metropolitan area. Lastly, we recruited 121 mother-infant dyads in the Twin Cities, MN.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
.218 sd. The compensation difference between families in the experimental and control groups amounts to $313 per month and $16,276 over the course of the 52 months. This amount is in the range of income increases associated with child impacts of around .20 sd in studies of welfare experiments and the EITC. After accounting for likely 20% attrition, and in the absence of adjustments for sample clustering within hospitals or increased precision owing to the inclusion of baseline covariates in our impact estimates, the sample size of 800 at age 45-48 months, evenly divided between experimental and control groups, provides 80% statistical power to detect a .218 sd impact at p <.05 in a two-tailed test on cognitive functioning and family processes. Given the directional nature of all of our impact hypotheses, it could be argued that a one-tailed test is more appropriate, in which case our 80% power minimum detectable effect (MDE) size drops to .194 sd. The use of baseline covariates in estimation models will improve this power, while the use of bootstrap standard errors will decrease it, yielding offsetting effects of unknown but likely modest magnitudes.
Supporting Documents and Materials

Documents

Document Name
Research Strategy
Document Type
proposal
Document Description

Funded by NICHD on the basis of the research proposed in the Research Strategy document. Some of the proposed measures in the application have been replaced by measures listed in other sections of the registry (see Appendix Tables 1 and 2 for the measures used in data collection at age 12 months in the document titled "Analysis Plan and Measures- Update for (and prior to) age 12 months data collection"; see Appendix Tables 3 and 4 in the document titled "Analysis Plan and Measures- Update for (and prior to) age 24 months data collection" for the measures for data collection at age 24 months; see Appendix Tables 5 and 6 in the document titled "Analysis Plan and Measures- Update for (and prior to) age 36 months data collection" for the measures for data collection at age 36 months) and Appendix Tables 7 and 8 in the document titled "Analysis Plan and Measures- Update for (and prior to) age 48 months data collection" for the measure for data collection at 48 months. Additionally, a few other details have changed since this proposal was funded in 2017.
File
Research Strategy

MD5: f4f96c2b4e11c0ed47082065e92c6278

SHA1: 1542c334f95f47e8ba4da6204a094d6671f7ad9c

Uploaded At: June 30, 2021

IRB

Institutional Review Boards (IRBs)

IRB Name
Teachers College, Columbia University
IRB Approval Date
2021-11-19
IRB Approval Number
18-210
IRB Name
University of California, Irvine
IRB Approval Date
2022-04-27
IRB Approval Number
2016-3336
Analysis Plan

Analysis Plan Documents

Analysis Plan and Measures- Updated for (and prior to) age 24 months data collection

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SHA1: 3ebe1304966774879c896ed2f6673604354aff3f

Uploaded At: July 07, 2020

Analysis Plan and Measures- Update for (and prior to) age 12 months data collection

MD5: a69b3045107458475d54f62f1be9cdef

SHA1: 4324aea58a74fecae526a21dc19f8a28289ebd97

Uploaded At: July 12, 2020

Analysis Plan and Measures - Updated for (and prior to) age 48 months data collection

MD5: 7d49966098881fd5e767f0367113ad57

SHA1: cadc44644fe163fac9739841318a08fd3ca1219c

Uploaded At: August 16, 2022

Analysis Plan and Measures - Updated for (and prior to) age 36 months data collection

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