Maternal Lifestyle Study in Four Sites in the United States, 1993-2011 (ICPSR 34312)
Version Date: Mar 31, 2016 View help for published
Principal Investigator(s): View help for Principal Investigator(s)
Barry Lester, Women and Infants Hospital of Rhode Island;
Henrietta Bada, University of Kentucky;
Charles Bauer, University of Miami;
Seetha Shankaran, Wayne State University;
Toni Whitaker, University of Tennessee;
Linda LaGasse, Women and Infants Hospital of Rhode Island;
Jane Hammond, RTI International
https://doi.org/10.3886/ICPSR34312.v9
Version V9
Citation View help for Citation
Export Citation:
Funding View help for Funding
Subject Terms View help for Subject Terms
Geographic Coverage View help for Geographic Coverage
Smallest Geographic Unit View help for Smallest Geographic Unit
Data collection site (city)
Restrictions View help for Restrictions
Access to the MLS data is restricted. Users interested in obtaining these data must complete a Restricted Data Use Agreement, specify the reasons for the request, and obtain IRB approval or notice of exemption for their research. Apply for access to these data through the ICPSR data access request system portal.
Distributor(s) View help for Distributor(s)
Time Period(s) View help for Time Period(s)
Date of Collection View help for Date of Collection
Data Collection Notes View help for Data Collection Notes
-
Release 1: Includes data on prenatal cocaine and opiate exposure, body mass index (BMI) measurements for the study participants, Phase I data, and Phase II data for months 1 through 12.
Release 2: Includes data from Month 18, Month 24, Month 30, and Month 36 from Phase III.
Release 3: Includes year 4, the first year in Phase III.
Release 4: Includes years 4.5 and 5 from Phase III.
Release 5: Includes years 5.5, 6, and 7 from Phase III and 8 from Phase IV.
Release 6: Includes years 9 and 10 from Phase IV.
Release 7: Includes year 11 from phase IV and year 12 from Phase V.
Release 8: Contains the data for the final waves of the study which include years 13 through 16 from Phase V.
Release 9: Contains updates including the addition of scoring variables to datasets 74, 80, 99, 112, 124, 128, 132, 142, 147, 151, 155, 160, 161, 163, 167 and 170.
-
MLS was conducted under the auspices of the National Institute on Drug Abuse (NIDA) and the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), with co-funding from the National Institute of Mental Health (NIMH), Administration on Children, Youth, and Families (ACYF), and the Center for Substance Abuse Treatment (CSAT).
Sample View help for Sample
The Maternal Lifestyle Study (MLS) enrolled 8,627 mothers shortly after birth from four geographically-diverse sites. Mothers provided informed consent, and a NIDA Certificate of Confidentiality was obtained by each site that assured confidentiality of information regarding the mothers' drug use. The recruitment strategy was designed to identify and recruit all women delivering very low birth weight infants of 501 to 1,500 grams. For mothers delivering low birth weight infants (1,501-2,500 grams) and normal birth weight infants (greater than 2,500 grams), recruitment varied by site. Exclusion criteria have been published.
The longitudinal follow-up was recruited from the original large sample. Exposed dyads were group matched within site to non-exposed dyads on race, infant gender and gestational age (less than 32 weeks, 33-36 weeks, and greater than 36 weeks). There were 1,388 dyads enrolled in the longitudinal sample at the 1-month visit, including 658 exposed (543 infants with prenatal cocaine exposed; 58 with opiate exposure; and 57 with both cocaine and opiate exposure) and 730 comparison dyads who were not exposed to either cocaine or opiates during pregnancy. To be included, the dyad had to participate in the 1-month visit (age corrected for prematurity). Potential matched comparison dyads not attending the 1-month visit could be replaced, but not exposed dyads, leading to uneven size groups.
Time Method View help for Time Method
Universe View help for Universe
Mother and infant born from May 1993 to May 1995 at four participating centers, with longitudinal follow-up of mothers/caregivers, children and environment from 1 month to 16 years.
Unit(s) of Observation View help for Unit(s) of Observation
Data Type(s) View help for Data Type(s)
Mode of Data Collection View help for Mode of Data Collection
Original Release Date View help for Original Release Date
2014-04-01
Version History View help for Version History
- Lester, Barry, Henrietta Bada, Charles Bauer, Seetha Shankaran, Toni Whitaker, Linda LaGasse, and Jane Hammond. Maternal Lifestyle Study in Four Sites in the United States, 1993-2011. ICPSR34312-v9. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2016-03-31. http://doi.org/10.3886/ICPSR34312.v9
2016-03-31 The ninth release of MLS is an update that included the addition of scoring variables to some datasets and confidentiality changes. Also, improvements were made to questionnaire and codebook covers.
2016-03-29 The eighth release of MLS includes data and documentation for years 13 through 16 from Phase V. These data are included in parts 172-203.
2016-02-02 The seventh release of MLS includes data and documentation for year 11 from Phase IV and year 12 from Phase V. These data are included in parts 154-171.
2015-12-21 The sixth release of MLS includes data and documentation for years 9 and 10 from Phase IV. These data are included in parts 136-153.
2015-12-08 The fifth release of MLS includes data and documentation for years 5.5, 6 and 7 from Phase III and year 8 from Phase IV. These data are included in parts 103-135.
2015-08-24 The fourth release of MLS includes data and documentation for years 4.5 and 5 from Phase III. These data are included in parts 84-102. The study level documentation for this study has been updated to include additional information about file merging performed by NAHDAP. Previously released data is not being updated in this release.
2015-08-10 The third release of the MLS study includes data and documentation for year 4 from Phase III. This portion of the study is contained in parts 73-83. The study level documentation for this study has been updated to include additional information about file merging performed by NAHDAP. Previously released data is not being updated in this release.
2014-05-19 The second release of the MLS study includes data and documentation for months 18-36 from Phase II. The study level documentation for this study has been updated to include additional information about file merging performed by NAHDAP. Previously released data is not being updated in this release.
2014-04-01 ICPSR data undergo a confidentiality review and are altered when necessary to limit the risk of disclosure. ICPSR also routinely creates ready-to-go data files along with setups in the major statistical software formats as well as standard codebooks to accompany the data. In addition to these procedures, ICPSR performed the following processing steps for this data collection:
- Created variable labels and/or value labels.
- Standardized missing values.
- Performed recodes and/or calculated derived variables.
- Checked for undocumented or out-of-range codes.
Notes
The public-use data files in this collection are available for access by the general public. Access does not require affiliation with an ICPSR member institution.
One or more files in this data collection have special restrictions. Restricted data files are not available for direct download from the website; click on the Restricted Data button to learn more.
This study is maintained and distributed by the National Addiction & HIV Data Archive Program (NAHDAP). NAHDAP is supported by the National Institute on Drug Abuse (NIDA), part of the National Institutes of Health (NIH).