Mario Chen
Dados Biográficos
| ID | 5991922 |
|---|---|
| NOME | Mario Chen |
| PRENOMES | Mario |
| SOBRENOME | Chen |
| ASSINATURA | CHEN M |
| AFILIAÇÕES | Family Health International 360 |
| ORCID | 0000-0002-2434-2182 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 18 |
| TOTAL DE CITAÇÕES | 37 |
| TOTAL COMO AUTOR | 18 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 2012 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2025 |
| ÍNDICE H | 2 |
The case for investing in provider-administered subcutaneous DMPA
INTRODUCTION: Depot medroxyprogesterone acetate (DMPA) is available as provider-administered intramuscular (DMPA-IM) and subcutaneous injections (PA DMPA-SC), as well as DMPA-SC self-injection (SI), which enhances accessibility and continuation by reducing facility visits. However, DMPA-SC has a higher unit price than DMPA-IM, and low SI uptake can undermine its cost-effectiveness. This study assessed whether PA DMPA-SC's potential benefits justi…
Strengthening causal inference from randomised controlled trials of complex interventions
Researchers conducting randomised controlled trials (RCTs) of complex interventions face design and analytical challenges that are not fully addressed in existing guidelines. Further guidance is needed to help ensure that these trials of complex interventions are conducted to the highest scientific standards while maximising the evidence that can be extracted from each trial. The key challenge is how to manage the multiplicity of outcomes require…
Family Connections randomized controlled trial
Achieving the 95-95-95 UNAIDS targets requires meeting the needs of adolescents, however we lack evidenced-based approaches to improving adolescent adherence to antiretroviral therapy (ART), increasing viral suppression, and supporting general wellbeing. We developed Family Connections as a group intervention for adolescents and their adult caregivers and conducted a randomized controlled trial in Ndola, Zambia to test feasibility and acceptabili…
The Provider Role and Perspective in the Denial of Family Planning Services to Women in Malawi
Family planning (FP) has been a global health priority for decades, yet barriers persist, including women being turned away from facilities without receiving services. This study assessed the provider role and perspective in client turnaway in three districts of Malawi. In 2019, data collectors surveyed 57 FP providers from 30 health facilities. All reported being comfortable providing FP to married women with children and married adolescents und…
Facilitators and barriers to participation in health mothers’ groups in improving maternal and child health and nutrition in Nepal
To improve women's participation in HMGs in Nepal, it is necessary to address factors at the SEM's individual, interpersonal, and community levels, such as enhancing FCHV literacy, providing advance notice of the meeting schedule, upgrading the meeting venues and reducing women's workload through family support, particularly during agricultural season. These improvements are essential for strengthening effective implementation of HMG meetings and…
Turned Away and at Risk
Family planning (FP) has been a development priority since the mid‐1990s, yet barriers to access persist globally, including women being turned away from facilities without a method. This study aimed to assess the extent of, and reasons for, FP turnaway in three districts of Malawi. In 2019, data collectors screened women exiting 30 health facilities and surveyed those who had been denied a method. Follow‐up surveys were conducted via telephone w…
Task Sharing of Injectable Contraception Services in Pakistan
Provision of injectable contraceptive services by lay health workers is endorsed by normative bodies, but support for this practice is not universal. We assessed whether lay providers (lady health workers, LHWs) could perform as well as clinically trained providers (family welfare workers, FWWs) on appropriate screening, counseling, and injection of intramuscular and subcutaneous depot medroxyprogesterone acetate (DMPA) using a randomized control…
The effects of the integration of an economic strengthening and HIV prevention education programme on the prevalence of sexually transmitted infections and savings behaviours among adolescents
Background: Multisectoral approaches are thought necessary to prevent HIV among adolescents. We examined whether an economic strengthening (ES) and an HIV-prevention education intervention improved outcomes when combined versus separately. Methods: We conducted a full-factorial randomised controlled study to randomise participants into all possible intervention groups based on the two interventions: economic strengthening only (ES-only), HIV-prev…
Correlates of Rapid Repeat Pregnancy Among Adolescents and Young Women in Uganda
CONTEXT: Short pregnancy intervals can contribute to maternal and child morbidity and mortality. No previous research has explored factors associated with short pregnancy intervals among young women in Uganda, where adolescent pregnancy and short birth intervals are common. METHODS: Data on 626 married or cohabiting women aged 15-22 with one or two previous pregnancies were drawn from the 2011 Uganda Demographic and Health Survey. Bivariate and m…
Expanding Understanding of Community Health Worker Programs
With health worker shortages in rural areas, community health workers (CHWs) are instrumental to the sustainability of primary health care and to the ability to meet health needs. Identifying appropriate operational models and incentive structures is an important element of long-term success. This article reports on CHWs' work demands and affective response to their volunteer work within the broader context of their livelihoods in Madagascar. A c…
Applying Factorial Designs to Disentangle the Effects of Integrated Development
In this article, we discuss the study design and lessons learned from a full-factorial randomised controlled study conducted with beneficiaries of a youth programme in Pretoria, South Africa. The study assesses whether the integration of an economic strengthening intervention with an HIV-prevention education intervention improves economic and health outcomes beyond singular interventions. The selected youth were randomised into four groups: combi…
Evaluating Bang for the Buck
Evaluators often use qualitative research methods, yet there is little evidence on the comparative cost-effectiveness of the two most commonly employed qualitative methods—in-depth interviews (IDIs) and focus groups (FGs). We performed an inductive thematic analysis of data from 40 IDIs and 40 FGs on the health-seeking behaviors of African American men ( N = 350) in Durham, North Carolina. We used a bootstrap simulation to generate 10,000 random …
Expanding HIV testing and counselling into communities
Improving HIV testing and counselling (HTC) requires a range of strategies. This article reports on HTC service delivery by Village Health Teams (VHTs) in Uganda in the context of a model integrating this new component into pre-existing family planning services. Eight health centres from matched pairs were randomly allocated to intervention or control. After being trained, 36 VHTs reporting to selected facilities in the intervention group started…
Interactive Workshops to Promote Gender Equity and Family Planning in Rural Communities of Guatemala
In Guatemala, especially in rural areas, gender norms contribute to high fertility and closely spaced births by discouraging contraceptive use and constraining women from making decisions regarding the timing of their pregnancies and the size of their families. Community workshops for men, women and couples were conducted in 30 rural communities in Guatemala to test the hypothesis that the promotion of gender equity in the context of reproductive…
Understanding the Broader Sexual and Reproductive Health Needs of Female Sex Workers in Dhaka, Bangladesh
CONTEXT: Little is known about the sexual and reproductive health care needs of female sex workers in Dhaka, Bangladesh. METHODS: Survey data were collected from 354 hotel-based and 323 street-based female sex workers using a venue-based stratified cluster sampling approach. In addition, in-depth interviews were conducted with 20 female sex workers recruited from drop-in centers. We calculated unmet need for family planning and examined fertility…
HIV Testing Experience and Risk Behavior Among Sexually Active Black Young Adults
African Americans are disproportionately affected by the HIV epidemic inclusive of men who have sex with men, heterosexual men, and women. As part of a community‐based participatory research study we assessed HIV testing experience among sexually active 18–30 year old Black men and women in Durham, NC. Of 508 participants, 173 (74 %) men and 236 (86 %; p = 0.0008) women reported ever being tested. Barriers to testing (e.g., perceived risk and sti…
Repeat Use of Emergency Contraceptive Pills in Urban Kenya and Nigeria
CONTEXT: Little is known about the frequency and patterns of use of emergency contraceptive pills among women in urban Kenya and Nigeria. METHODS: To recruit women who had used emergency contraceptive pills, individuals aged 18-49 were intercepted and interviewed at shopping venues in Nairobi, Kenya, and Lagos, Nigeria, in 2011. Information was collected on 539 Nairobi and 483 Lagos respondents' demographic and behavioral characteristics, attitud…
Impact of a Provider Job Aid Intervention on Injectable Contraceptive Continuation in South Africa
Arriving late for scheduled contraceptive reinjections is common in many countries and contributes to discontinuation when providers are unsure how to manage such clients. A clinic‐randomized cohort and cross‐sectional study with more than 5,000 clients using injectable contraceptives was conducted in the Eastern Cape province of South Africa to test the effectiveness of a provider job aid for managing late‐returning clients and promoting continu…
Evaluating Bang for the Buck
Evaluators often use qualitative research methods, yet there is little evidence on the comparative cost-effectiveness of the two most commonly employed qualitative methods—in-depth interviews (IDIs) and focus groups (FGs). We performed an inductive thematic analysis of data from 40 IDIs and 40 FGs on the health-seeking behaviors of African American men ( N = 350) in Durham, North Carolina. We used a bootstrap simulation to generate 10,000 random …
HIV Testing Experience and Risk Behavior Among Sexually Active Black Young Adults
African Americans are disproportionately affected by the HIV epidemic inclusive of men who have sex with men, heterosexual men, and women. As part of a community‐based participatory research study we assessed HIV testing experience among sexually active 18–30 year old Black men and women in Durham, NC. Of 508 participants, 173 (74 %) men and 236 (86 %; p = 0.0008) women reported ever being tested. Barriers to testing (e.g., perceived risk and sti…
Turned Away and at Risk
Family planning (FP) has been a development priority since the mid‐1990s, yet barriers to access persist globally, including women being turned away from facilities without a method. This study aimed to assess the extent of, and reasons for, FP turnaway in three districts of Malawi. In 2019, data collectors screened women exiting 30 health facilities and surveyed those who had been denied a method. Follow‐up surveys were conducted via telephone w…
Expanding HIV testing and counselling into communities
Improving HIV testing and counselling (HTC) requires a range of strategies. This article reports on HTC service delivery by Village Health Teams (VHTs) in Uganda in the context of a model integrating this new component into pre-existing family planning services. Eight health centres from matched pairs were randomly allocated to intervention or control. After being trained, 36 VHTs reporting to selected facilities in the intervention group started…
Impact of a Provider Job Aid Intervention on Injectable Contraceptive Continuation in South Africa
Arriving late for scheduled contraceptive reinjections is common in many countries and contributes to discontinuation when providers are unsure how to manage such clients. A clinic‐randomized cohort and cross‐sectional study with more than 5,000 clients using injectable contraceptives was conducted in the Eastern Cape province of South Africa to test the effectiveness of a provider job aid for managing late‐returning clients and promoting continu…
Impact of a Provider Job Aid Intervention on Injectable Contraceptive Continuation in South Africa
Arriving late for scheduled contraceptive reinjections is common in many countries and contributes to discontinuation when providers are unsure how to manage such clients. A clinic‐randomized cohort and cross‐sectional study with more than 5,000 clients using injectable contraceptives was conducted in the Eastern Cape province of South Africa to test the effectiveness of a provider job aid for managing late‐returning clients and promoting continu…
Repeat Use of Emergency Contraceptive Pills in Urban Kenya and Nigeria
CONTEXT: Little is known about the frequency and patterns of use of emergency contraceptive pills among women in urban Kenya and Nigeria. METHODS: To recruit women who had used emergency contraceptive pills, individuals aged 18-49 were intercepted and interviewed at shopping venues in Nairobi, Kenya, and Lagos, Nigeria, in 2011. Information was collected on 539 Nairobi and 483 Lagos respondents' demographic and behavioral characteristics, attitud…
Interactive Workshops to Promote Gender Equity and Family Planning in Rural Communities of Guatemala
In Guatemala, especially in rural areas, gender norms contribute to high fertility and closely spaced births by discouraging contraceptive use and constraining women from making decisions regarding the timing of their pregnancies and the size of their families. Community workshops for men, women and couples were conducted in 30 rural communities in Guatemala to test the hypothesis that the promotion of gender equity in the context of reproductive…
Understanding the Broader Sexual and Reproductive Health Needs of Female Sex Workers in Dhaka, Bangladesh
CONTEXT: Little is known about the sexual and reproductive health care needs of female sex workers in Dhaka, Bangladesh. METHODS: Survey data were collected from 354 hotel-based and 323 street-based female sex workers using a venue-based stratified cluster sampling approach. In addition, in-depth interviews were conducted with 20 female sex workers recruited from drop-in centers. We calculated unmet need for family planning and examined fertility…
HIV Testing Experience and Risk Behavior Among Sexually Active Black Young Adults
African Americans are disproportionately affected by the HIV epidemic inclusive of men who have sex with men, heterosexual men, and women. As part of a community‐based participatory research study we assessed HIV testing experience among sexually active 18–30 year old Black men and women in Durham, NC. Of 508 participants, 173 (74 %) men and 236 (86 %; p = 0.0008) women reported ever being tested. Barriers to testing (e.g., perceived risk and sti…
Evaluating Bang for the Buck
Evaluators often use qualitative research methods, yet there is little evidence on the comparative cost-effectiveness of the two most commonly employed qualitative methods—in-depth interviews (IDIs) and focus groups (FGs). We performed an inductive thematic analysis of data from 40 IDIs and 40 FGs on the health-seeking behaviors of African American men ( N = 350) in Durham, North Carolina. We used a bootstrap simulation to generate 10,000 random …
Expanding HIV testing and counselling into communities
Improving HIV testing and counselling (HTC) requires a range of strategies. This article reports on HTC service delivery by Village Health Teams (VHTs) in Uganda in the context of a model integrating this new component into pre-existing family planning services. Eight health centres from matched pairs were randomly allocated to intervention or control. After being trained, 36 VHTs reporting to selected facilities in the intervention group started…
Correlates of Rapid Repeat Pregnancy Among Adolescents and Young Women in Uganda
CONTEXT: Short pregnancy intervals can contribute to maternal and child morbidity and mortality. No previous research has explored factors associated with short pregnancy intervals among young women in Uganda, where adolescent pregnancy and short birth intervals are common. METHODS: Data on 626 married or cohabiting women aged 15-22 with one or two previous pregnancies were drawn from the 2011 Uganda Demographic and Health Survey. Bivariate and m…
Expanding Understanding of Community Health Worker Programs
With health worker shortages in rural areas, community health workers (CHWs) are instrumental to the sustainability of primary health care and to the ability to meet health needs. Identifying appropriate operational models and incentive structures is an important element of long-term success. This article reports on CHWs' work demands and affective response to their volunteer work within the broader context of their livelihoods in Madagascar. A c…
Applying Factorial Designs to Disentangle the Effects of Integrated Development
In this article, we discuss the study design and lessons learned from a full-factorial randomised controlled study conducted with beneficiaries of a youth programme in Pretoria, South Africa. The study assesses whether the integration of an economic strengthening intervention with an HIV-prevention education intervention improves economic and health outcomes beyond singular interventions. The selected youth were randomised into four groups: combi…
The effects of the integration of an economic strengthening and HIV prevention education programme on the prevalence of sexually transmitted infections and savings behaviours among adolescents
Background: Multisectoral approaches are thought necessary to prevent HIV among adolescents. We examined whether an economic strengthening (ES) and an HIV-prevention education intervention improved outcomes when combined versus separately. Methods: We conducted a full-factorial randomised controlled study to randomise participants into all possible intervention groups based on the two interventions: economic strengthening only (ES-only), HIV-prev…
Task Sharing of Injectable Contraception Services in Pakistan
Provision of injectable contraceptive services by lay health workers is endorsed by normative bodies, but support for this practice is not universal. We assessed whether lay providers (lady health workers, LHWs) could perform as well as clinically trained providers (family welfare workers, FWWs) on appropriate screening, counseling, and injection of intramuscular and subcutaneous depot medroxyprogesterone acetate (DMPA) using a randomized control…
Strengthening causal inference from randomised controlled trials of complex interventions
Researchers conducting randomised controlled trials (RCTs) of complex interventions face design and analytical challenges that are not fully addressed in existing guidelines. Further guidance is needed to help ensure that these trials of complex interventions are conducted to the highest scientific standards while maximising the evidence that can be extracted from each trial. The key challenge is how to manage the multiplicity of outcomes require…
Family Connections randomized controlled trial
Achieving the 95-95-95 UNAIDS targets requires meeting the needs of adolescents, however we lack evidenced-based approaches to improving adolescent adherence to antiretroviral therapy (ART), increasing viral suppression, and supporting general wellbeing. We developed Family Connections as a group intervention for adolescents and their adult caregivers and conducted a randomized controlled trial in Ndola, Zambia to test feasibility and acceptabili…
The Provider Role and Perspective in the Denial of Family Planning Services to Women in Malawi
Family planning (FP) has been a global health priority for decades, yet barriers persist, including women being turned away from facilities without receiving services. This study assessed the provider role and perspective in client turnaway in three districts of Malawi. In 2019, data collectors surveyed 57 FP providers from 30 health facilities. All reported being comfortable providing FP to married women with children and married adolescents und…
Facilitators and barriers to participation in health mothers’ groups in improving maternal and child health and nutrition in Nepal
To improve women's participation in HMGs in Nepal, it is necessary to address factors at the SEM's individual, interpersonal, and community levels, such as enhancing FCHV literacy, providing advance notice of the meeting schedule, upgrading the meeting venues and reducing women's workload through family support, particularly during agricultural season. These improvements are essential for strengthening effective implementation of HMG meetings and…
Turned Away and at Risk
Family planning (FP) has been a development priority since the mid‐1990s, yet barriers to access persist globally, including women being turned away from facilities without a method. This study aimed to assess the extent of, and reasons for, FP turnaway in three districts of Malawi. In 2019, data collectors screened women exiting 30 health facilities and surveyed those who had been denied a method. Follow‐up surveys were conducted via telephone w…
The case for investing in provider-administered subcutaneous DMPA
INTRODUCTION: Depot medroxyprogesterone acetate (DMPA) is available as provider-administered intramuscular (DMPA-IM) and subcutaneous injections (PA DMPA-SC), as well as DMPA-SC self-injection (SI), which enhances accessibility and continuation by reducing facility visits. However, DMPA-SC has a higher unit price than DMPA-IM, and low SI uptake can undermine its cost-effectiveness. This study assessed whether PA DMPA-SC's potential benefits justi…
Medicine (15 obras) · Nursing (11 obras) · Family medicine (10 obras) · Global Maternal and Child Health (9 obras) · Population (9 obras) · Environmental health (8 obras) · Family planning (8 obras) · Psychology (8 obras) · Adolescent Sexual and Reproductive Health (7 obras) · Demography (7 obras)