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Purposive sampling in a qualitative evidence synthesis: a worked example from a synthesis on parental perceptions of vaccination communication.

ABSTRACT: BACKGROUND:In a qualitative evidence synthesis, too much data due to a large number of studies can undermine our ability to perform a thorough analysis. Purposive sampling of primary studies for inclusion in the synthesis is one way of achieving a manageable amount of data. The objective of this article is to describe the development and application of a sampling framework for a qualitative evidence synthesis on vaccination communication. METHODS:We developed and applied a three-step framework to sample studies from among those eligible for inclusion in our synthesis. We aimed to prioritise studies that were from a range of settings, were as relevant as possible to the review, and had rich data. We extracted information from each study about country and study setting, vaccine, data richness, and study objectives and applied the following sampling framework: 1. Studies conducted in low and middle income settings 2. Studies scoring four or more on a 5-point scale of data richness 3. Studies where the study objectives closely matched our synthesis objectives RESULTS: We assessed 79 studies as eligible for inclusion in the synthesis and sampled 38 of these. First, we sampled all nine studies that were from low and middle-income countries. These studies contributed to the least number of findings. We then sampled an additional 24 studies that scored high for data richness. These studies contributed to a larger number of findings. Finally, we sampled an additional five studies that most closely matched our synthesis objectives. These contributed to a large number of findings. CONCLUSIONS:Our approach to purposive sampling helped ensure that we included studies representing a wide geographic spread, rich data and a focus that closely resembled our synthesis objective. It is possible that we may have overlooked primary studies that did not meet our sampling criteria but would have contributed to the synthesis. For example, two studies on migration and access to health services did not meet the sampling criteria but might have contributed to strengthening at least one finding. We need methods to cross-check for under-represented themes.

SUBMITTER: Ames H

PROVIDER: S-EPMC6357413 | biostudies-other | 2019 Jan

REPOSITORIES: biostudies-other

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Purposive sampling in a qualitative evidence synthesis: a worked example from a synthesis on parental perceptions of vaccination communication.

Ames Heather H Glenton Claire C Lewin Simon S

BMC medical research methodology 20190131 1

<h4>Background</h4>In a qualitative evidence synthesis, too much data due to a large number of studies can undermine our ability to perform a thorough analysis. Purposive sampling of primary studies for inclusion in the synthesis is one way of achieving a manageable amount of data. The objective of this article is to describe the development and application of a sampling framework for a qualitative evidence synthesis on vaccination communication.<h4>Methods</h4>We developed and applied a three-s ...[more]

PMID: 30704402

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Project description:BackgroundUnderstanding stakeholders' (parents', communities' and health workers') perspectives of communication about childhood vaccination, including their preferences for its format, delivery and content, is an important step towards designing better communication strategies and ensuring more informed parents. Our objectives were to explore stakeholders' views, experiences and preferences for childhood vaccination communication in Cameroon.MethodsIn 2014, in the Central and North West Regions of Cameron, we gathered qualitative data for our case study using the following methods: semi structured interviews; observations and informal conversations during routine immunization clinics and three rounds of the National Polio Immunization Campaign; document analysis of reports and mass media communications about vaccination; and a survey of parents. We conducted a thematic analysis of the qualitative data to identify themes relating to views, experiences and perceptions of vaccination information and its delivery. Survey data were analysed using simple descriptive statistics.ResultsAll of the parents interviewed felt that vaccinating their child was important, and trusted the information provided by health workers. However, many parents wanted more information. Parents did not always feel that they could ask questions during vaccination appointments. All participants felt that health workers and vaccination clinics were important sources of information. Social mobilisation activities such as door-to-door visits and announcements during religious services were important and accepted ways of communicating information, especially during vaccination campaigns. Information communicated through mass media and text messages was also seen as important. In general, stakeholders believed that more consistent messaging about routine vaccination through community channels would be helpful to remind parents of the importance of routine vaccination during ongoing rounds of vaccination campaigns against polio.ConclusionsThis study confirms that parents regard information about childhood vaccination as important, but that health services need to be organized in ways that prioritize and facilitate communication, particularly about routine vaccination.

Project description:BackgroundThe experiences, physical and mental health and needs of women with breast cancer have been studied in some detail, but there is a lack of discussion of the experiences of stakeholder groups such as men with breast cancer, partners and carers and healthcare professionals. The aim of this study was to explore and understand the experiences and perceptions of male breast cancer stakeholders from diagnosis through to survivorship.MethodsWe conducted a thematic review of qualitative studies included in a large published scoping review on male breast cancer (reported under the Preferred Reporting Items for Systematic Reviews and Meta-Analyses for Scoping Reviews extension). To be included in a qualitative evidence review, studies had to use qualitative methods for data collection and analysis to capture the perspectives of men with breast cancer, partners or caregivers, and healthcare workers. Key characteristics and findings were extracted and a conceptual coding framework was summarized using thematic analysis.ResultsOut of a total of 310 studies in the research literature (published research articles and gray literature), 15 studies met the inclusion criteria. These studies reported on the experiences of men with breast cancer, partners or caregivers, and healthcare workers, with participant numbers ranging from 2 to 31. A total of 17 descriptive themes (study outcomes) were identified. From these, four high-level analytic themes emerged: (1) Predicament; (2) Emotion; (3) Support; (4) Coping.ConclusionsThe gender stigma that exists at the patient, healthcare system, and family-society levels largely influences the experiences of the male breast cancer stakeholder population. To address gender inequalities in breast cancer care, healthcare organizations and society at large should remain equally attentive to the needs of male and female breast cancer patients. These needs include reducing healthcare and social stigma, providing gender-specific information and emotional support, and access to support groups.

Project description:Effective vaccination communication with parents is critical in efforts to overcome barriers to childhood vaccination, tackle vaccine hesitancy and improve vaccination coverage. Health workers should be able to provide information to parents and other caregivers and support them in reaching decisions about vaccinating their children. Limited information exists regarding the perceptions of caregivers and health workers on the vaccination communication strategies employed in Nigeria. This study, which forms part of the 'Communicate to vaccinate' (COMMVAC) project, aims to explore the perceptions and experiences of caregivers and health workers in Nigeria on vaccination communication strategies implemented in their settings.We conducted the study in two States: Bauchi in Northern Nigeria and Cross River in the south. We carried out observations (n = 40), in-depth interviews (n = 14) and focus group discussions (FGDs) (n = 12) amongst 14 purposively selected health workers, two community leaders and 84 caregivers in the two states. We transcribed data verbatim and analysed the data using a framework analysis approach.Caregivers were informed about vaccination activities through three main sources: health facilities (during health education sessions conducted at antenatal or immunization clinics); media outlets; and announcements (in churches/mosques, communities and markets). Caregivers reported that the information received was very useful. Their preferred sources of information included phone text messages, town announcers, media and church/mosque announcements. Some caregivers perceived the clinic environment, long waiting times and health worker attitudes as barriers to receiving vaccination information.When delivering communication interventions, health workers described issues tied to poor communication skills; poor motivation; and attitudes of community members, including vaccine resistance.Communication about vaccination involves more than the message but is also influenced by the environment and the attitudes of the deliverer and receiver. It is pertinent for health policy makers and programme managers to understand these factors so as to effectively implement communication approaches.

Project description:BackgroundReproductive coercion and abuse is a major public health issue, with significant effects on the health and well-being of women. Reproductive coercion and abuse includes any form of behaviour that intentionally controls another person's reproductive choices. The aim of this qualitative evidence synthesis is to explore women's experiences of reproductive coercion and abuse globally, to broaden understanding of the different ways reproductive coercion and abuse is perpetrated, perceived and experienced across settings and socio-cultural contexts.MethodWe searched Medline, CINAHL and Embase for eligible studies from inception to 25th February 2021. Primary studies with a qualitative study design that focused on the experiences and perceptions of women who have encountered reproductive coercion and abuse were eligible for inclusion. Titles and abstracts, and full texts were screened by independent reviewers. We extracted data from included studies using a form designed for this synthesis and assessed methodological limitations using CASP. We used Thomas and Harden's thematic analysis approach to analyse and synthesise the evidence, and the GRADE-CERQual approach to assess confidence in review findings.ResultsWe included 33 studies from twelve countries in South Asia, the Asia Pacific, North America, South America, Africa and Europe. Most studies used in-depth interviews and focus group discussions to discuss women's experiences of reproductive coercion and abuse. Reproductive coercion and abuse manifested in a range of behaviours including control of pregnancy outcome, pregnancy pressure or contraceptive sabotage. There were a range of reasons cited for reproductive coercion and abuse, including control of women, rigid gender roles, social inequalities and family pressure. Women's different responses to reproductive coercion and abuse included using covert contraception and feelings of distress, anger and trauma. Across contexts, perpetration and experiences of reproductive coercion and abuse were influenced by different factors including son preferences and social exclusion.ConclusionsWe reflect on the importance of socio-cultural factors in understanding the phenomenon of reproductive coercion and abuse and how it affects women, as well as how the mechanisms of power and control at both individual and societal levels work to perpetuate the incidence of reproductive coercion and abuse against women.

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Purposive sampling in a qualitative evidence synthesis: a worked example from a synthesis on parental perceptions of vaccination communication.

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Purposive sampling in a qualitative evidence synthesis: a worked example from a synthesis on parental perceptions of vaccination communication.

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