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Malawi Longitudinal Study of Families and Health (MLSFH), 1998-2021 (ICPSR 20840)

Released/updated on: 2026-03-04

Geographic coverage: Malawi, Africa

Time period: 1998-01-01--2021-01-01

The Malawi Longitudinal Study of Families and Health (MLSFH) is one of very few long-standing longitudinal cohort studies in a poor Sub-Saharan African (SSA) context. It provides a record of more than 25 years of demographic, socioeconomic, and health conditions in one of the world's poorest countries. Initial data collection began in 1998 under the Malawi Diffusion and Ideational Change Project (MDICP) to examine social networks and fertility decisions among married women and their husbands. While this initial study population is still followed, the scope of the project and population expanded to a broader focus on social and contextual determinants of health across the lifecourse in Malawi.

This collection includes Rounds 1 through 9 of the MLSFH, as well as supplemental data collections from Sexual Diaries, Migration Follow-Ups (MHM), a Biomarker Survey, Adverse Childhood Experiences (ACE), and a Benefits of Knowledge Intervention Survey. The MLSFH Data web page contains additional information and cohort profiles for all MLSFH data collections, including those not made available through ICPSR-DSDR.

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Trends in Undiagnosed Chlamydia Prevalence in Baltimore, 1997-1998 and 2006-2009 (ICPSR 35064)

Released/updated on: 2014-09-26

Geographic coverage: Baltimore, United States, Maryland

Time period: 1997-01-01--1998-09-01, 2006-09-01--2009-06-01

The 1997-1998 Baltimore STD and Behavior Survey (BSBS) and the 2006-2009 Monitoring STIs Survey Program (MSSP) collected biospecimens from adults ages 18 to 35 in Baltimore to estimate trends in undiagnosed chlamydial infection. The survey recruited a population sample of young adults to participate in an in-person survey of sexual and other sensitive behaviors and STD history. BSBS data collection was conducted over the period of January, 1997 through September, 1998. Respondents also provided a urine sample. The MSSP collected telephone survey data and eligible respondents mailed in specimens for testing. The biospecimens allowed for continuous monitoring of three STIs -- gonorrhea, chlamydial infection, and trichomoniasis. The data collection contains variables about infection symptoms, use of antibiotics, sexual activity and behavior, domestic violence, drug use and whether respondents are positive for chlamydia. Demographic information includes gender, age, education, marital status, race, and employment status.

Curated

Undiagnosed Trichomoniasis Infection in the Population of Baltimore, MD: Data from the 2006 - 2009 Monitoring STIs Survey Program (ICPSR 35066)

Released/updated on: 2014-11-25

Geographic coverage: Baltimore, United States, Maryland

Time period: 2006-09-05--2009-08-15

The Monitoring STIs Survey Program (MSSP) monitored sexually transmitted infection (STI) prevalence among probability samples of adolescents and young adults aged 15 to 35 with landline phones in Baltimore, Maryland from 2006 to 2009. The MSSP collected survey data using telephone audio computer-assisted self-interviewing (TACASI) and biospecimens which were tested using nucleic acid amplification tests to monitor trichomonaiasis and other STIs. Respondents provided information about their sexual practices, sexual history, information about incarceration of themselves or their partners, and information about sexually transmitted diseases (STDs), STIs, and respective treatments. Demographic variables collected include gender, race, educational attainment, age, employment status, and marital status.