Internet Recruitment and Retention for a 6 Months’ Longitudinal Study

Retention strategies in longitudinal cohort studies: a systematic review and meta-analysis

BACKGROUND

Participant retention strategies that minimise attrition in longitudinal cohort studies have evolved considerably in recent years. This study aimed to assess, via systematic review and meta-analysis, the effectiveness of both traditional strategies and contemporary innovations for retention adopted by longitudinal cohort studies in the past decade.

METHODS

Health research databases were searched for retention strategies used within longitudinal cohort studies published in the 10-years prior, with 143 eligible longitudinal cohort studies identified (141 articles; sample size range: 30 to 61,895). Details on retention strategies and rates, research designs, and participant demographics were extracted. Meta-analyses of retained proportions were performed to examine the association between cohort retention rate and individual and thematically grouped retention strategies.

RESULTS

Results identified 95 retention strategies, broadly classed as either: barrier-reduction, community-building, follow-up/reminder, or tracing strategies. Forty-four of these strategies had not been identified in previous reviews. Meta-regressions indicated that studies using barrier-reduction strategies retained 10% more of their sample (95%CI [0.13 to 1.08]; p = .01); however, studies using follow-up/reminder strategies lost an additional 10% of their sample (95%CI [- 1.19 to - 0.21]; p = .02). The overall number of strategies employed was not associated with retention.

CONCLUSIONS

Employing a larger number of retention strategies may not be associated with improved retention in longitudinal cohort studies, contrary to earlier narrative reviews. Results suggest that strategies that aim to reduce participant burden (e.g., flexibility in data collection methods) might be most effective in maximising cohort retention.

Using Internet to recruit immigrants with language and culture barriers for tobacco and alcohol use screening: a study among Brazilians

Limited English proficient (LEP) individuals face disparities in accessing substance abuse treatment, but little is known on how to reach this population. This study aimed to test online recruitment methods for tobacco and alcohol screening among LEP Portuguese speakers. The study was advertised in Portuguese using Facebook, Google, online newsletters and E-mail. Participants clicked ads to consent and access a screening for tobacco and alcohol dependence. Ads yielded 690 screening responses in 90 days. Respondents had a mean age of 42.7 (SD 12), with a higher proportion of women than men, 95% born in Brazil with high levels of LEP and low levels of acculturation. Facebook ads yielded 41.4% of responses, and were the lowest cost recruitment channel ($8.9, $31.10 and $20.40 per respondent, hazardous drinker and smoker, respectively). Online recruitment of LEP populations is feasible. Future studies should test similar strategies in other LEP groups.

Lessons Learned From Adolescent Mothers: Advice on Recruitment

PURPOSE

Adolescent mothers have high rates of depressive symptoms and inadequate rates of depression evaluation and treatment. The purpose of this qualitative study was to identify characteristics of effective recruitment ads for an Internet-based depression intervention for pregnant and parenting adolescents.

METHODS

Using focus group methods, participants (N = 35) were recruited and enrolled at a teen parent program, part of the public school system. Focus group sessions were analyzed for participant preferences, rationale for choices, key words, and the frequency of words within the videotapes and audiotapes.

RESULTS

Findings indicated that adolescent mothers preferred pictures in which everyone looked happy, narrative that clearly indicated cost and eligibility, and words that they would use in conversation.

CLINICAL RELEVANCE

The study filled an important gap in the literature by soliciting from pregnant and parenting adolescents their preferences regarding visual appeal, content adequacy, and message clarity of advertisements that would motivate them to visit an Internet intervention for depression. Results could be extrapolated to education of pregnant and parenting adolescents in clinical settings.

Recruitment via the Internet and social networking sites: the 1989-1995 cohort of the Australian Longitudinal Study on Women's Health

Background

Faced with the challenge of recruiting young adults for health studies, researchers have increasingly turned to the Internet and social networking sites, such as Facebook, as part of their recruitment strategy. As yet, few large-scale studies are available that report on the characteristics and representativeness of the sample obtained from such recruitment methods.

Objective

The intent of the study was to describe the sociodemographic and health characteristics of a national sample of young Australian women recruited mainly through the Internet and social networking sites and to discuss the representativeness of their sociodemographic, health, and lifestyle characteristics relative to the population.

Methods

A cohort of 17,069 women (born between 1989 and 1995) was recruited in 2012-13 for the Australian Longitudinal Study on Women’s Health. Sociodemographic characteristics (percentages, means, and 95% confidence intervals) from the online survey data were compared with women aged 18-23 years from the 2011 Australian Census. Sample data were compared by age and education level with data from the 2011-13 Australian Health Survey (AHS).

Results

Compared to the Australian Census data, study participants were broadly representative in terms of geographical distribution across Australia, marital status (95.62%, 16,321/17,069) were never married), and age distribution. A higher percentage had attained university (22.52%, 3844/17,069) and trade/certificate/diploma qualifications (25.94%, 4428/17,069) compared with this age group of women in the national population (9.4% and 21.7% respectively). Among study participants, 22.05% (3721/16,877) were not in paid employment with 35.18% (5931/16,857) studying 16 or more hours a week. A higher percentage of study participants rated their health in the online survey as fair or poor (rather than good, very good, or excellent) compared with those participating in face-to-face interviews in the AHS (18.77%, 3203/17,069 vs 10.1%). A higher percentage of study participants were current smokers (21.78%, 3718/17,069 vs 16.4%) and physically active (59.30%, 10,089/17,014 were classified as sufficiently active vs 48.3%) but alcohol consumption was lower (59.58%, 9865/16,558 reported drinking alcohol at least once per month vs 65.9% in the AHS). Using self-reported height and weight to determine body mass index (BMI, kg/m²), 34.80% (5901/16,956) of the cohort were classified as overweight or obese (BMI of 25 or more), compared with 33.6% respectively using measured height and weight in the AHS.

Conclusions

Findings indicated that using the Internet and social networking sites for an online survey represent a feasible recruitment strategy for a national cohort of young women and result in a broadly representative sample of the Australian population.

Implications for nurses and researchers of Internet use by childbearing women

The purpose of this article is to share the growing body of literature on Internet use by childbearing women and to present findings of our pilot study done to learn more about this population's information-seeking behaviors. In our sample of 42 women, 97 percent used the Internet to seek health information. They searched for the purposes of decision making, anticipatory guidance, connecting and for general information. Nurses and other health care providers should anticipate that women are using the Internet for health information and should be proactive in referring them to reputable websites and helping them identify trustworthy websites as part of routine prenatal care and childbirth education. Because so many women use the Internet, this is also a feasible venue for nursing research recruitment and potential intervention delivery.

Research involving participants with chronic diseases: overcoming recruitment obstacles

Chronic diseases are rampant in the United States and account for the majority of healthcare costs in this country. The implementation of research studies involving members of chronic disease populations is necessary to the development of interventions aimed at preventing these conditions and improving outcomes. The implementation of such studies hinges on the successful recruitment of an adequate number of study participants. Difficulties surrounding participant recruitment in behavioral studies are well documented and present a barrier to researchers aiming to conduct research involving persons with chronic diseases. Common recruitment challenges associated with recruiting chronic disease participants are reviewed, and a highly effective, alternative recruitment strategy used by the authors in a qualitative study involving persons with epilepsy is discussed in detail.

Web recruitment and internet use and preferences reported by women with postpartum depression after pregnancy complications

Nearly one million women each year have pregnancy complications that cause antepartum and postpartum anxiety and depression. This exploratory study determined 1) feasibility of using social media to recruit women with depressive symptoms following high risk pregnancy, 2) women's barriers to treatment, 3) use of online resources for assistance with PPD, and 4) preferences for internet treatment. Among a national sample of 53 women, nearly 70% had major depression. Common barriers were lack of time and stigma. Over 90% of women would use the internet to learn coping strategies for PPD. Women expressed interest in web-based PPD treatment and identified desired characteristics of an intervention.