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Dive into the research topics where Caroline Free is active.

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Featured researches published by Caroline Free.


PLOS Medicine | 2013

The Effectiveness of Mobile-Health Technology-Based Health Behaviour Change or Disease Management Interventions for Health Care Consumers: A Systematic Review

Caroline Free; Gemma Phillips; Leandro Galli; Louise Watson; Lambert Felix; Phil Edwards; Vikram Patel; Andy Haines

Caroline Free and colleagues systematically review a fast-moving field, that of the effectiveness of mobile technology interventions delivered to healthcare consumers, and conclude that high-quality, adequately powered trials of optimized interventions are required to evaluate effects on objective outcomes.


PLOS Medicine | 2013

The Effectiveness of Mobile-Health Technologies to Improve Health Care Service Delivery Processes: A Systematic Review and Meta-Analysis

Caroline Free; Gemma Phillips; Louise Watson; Leandro Galli; Lambert Felix; Phil Edwards; Vikram Patel; Andy Haines

Caroline Free and colleagues systematically review controlled trials of mobile technology interventions to improve health care delivery processes and show that current interventions give only modest benefits and that high-quality trials measuring clinical outcomes are needed.


The Lancet | 2011

Smoking cessation support delivered via mobile phone text messaging (txt2stop): a single-blind, randomised trial

Caroline Free; Rosemary Knight; Steven Robertson; Robyn Whittaker; Phil Edwards; Weiwei Zhou; Anthony Rodgers; John Cairns; Michael G. Kenward; Ian Roberts

Summary Background Smoking cessation programmes delivered via mobile phone text messaging show increases in self-reported quitting in the short term. We assessed the effect of an automated smoking cessation programme delivered via mobile phone text messaging on continuous abstinence, which was biochemically verified at 6 months. Methods In this single-blind, randomised trial, undertaken in the UK, smokers willing to make a quit attempt were randomly allocated, using an independent telephone randomisation system, to a mobile phone text messaging smoking cessation programme (txt2stop), comprising motivational messages and behavioural-change support, or to a control group that received text messages unrelated to quitting. The system automatically generated intervention or control group texts according to the allocation. Outcome assessors were masked to treatment allocation. The primary outcome was self-reported continuous smoking abstinence, biochemically verified at 6 months. All analyses were by intention to treat. This study is registered, number ISRCTN 80978588. Findings We assessed 11 914 participants for eligibility. 5800 participants were randomised, of whom 2915 smokers were allocated to the txt2stop intervention and 2885 were allocated to the control group; eight were excluded because they were randomised more than once. Primary outcome data were available for 5524 (95%) participants. Biochemically verified continuous abstinence at 6 months was significantly increased in the txt2stop group (10·7% txt2stop vs 4·9% control, relative risk [RR] 2·20, 95% CI 1·80–2·68; p<0·0001). Similar results were obtained when participants that were lost to follow-up were treated as smokers (268 [9%] of 2911 txt2stop vs 124 [4%] of 2881 control [RR 2·14, 95% CI 1·74–2·63; p<0·0001]), and when they were excluded (268 [10%] of 2735 txt2stop vs 124 [4%] of 2789 control [2·20, 1·79–2·71; p<0·0001]). No significant heterogeneity was shown in any of the prespecified subgroups. Interpretation The txt2stop smoking cessation programme significantly improved smoking cessation rates at 6 months and should be considered for inclusion in smoking cessation services. Funding UK Medical Research Council, Primary Care Research Networks.


BMC Research Notes | 2010

The effectiveness of M-health technologies for improving health and health services: a systematic review protocol

Caroline Free; Gemma Phillips; Lambert M Felix; Leandro Galli; Vikram Patel; Philip Edwards

BackgroundThe application of mobile computing and communication technology is rapidly expanding in the fields of health care and public health. This systematic review will summarise the evidence for the effectiveness of mobile technology interventions for improving health and health service outcomes (M-health) around the world.FindingsTo be included in the review interventions must aim to improve or promote health or health service use and quality, employing any mobile computing and communication technology. This includes: (1) interventions designed to improve diagnosis, investigation, treatment, monitoring and management of disease; (2) interventions to deliver treatment or disease management programmes to patients, health promotion interventions, and interventions designed to improve treatment compliance; and (3) interventions to improve health care processes e.g. appointment attendance, result notification, vaccination reminders.A comprehensive, electronic search strategy will be used to identify controlled studies, published since 1990, and indexed in MEDLINE, EMBASE, PsycINFO, Global Health, Web of Science, the Cochrane Library, or the UK NHS Health Technology Assessment database. The search strategy will include terms (and synonyms) for the following mobile electronic devices (MEDs) and a range of compatible media: mobile phone; personal digital assistant (PDA); handheld computer (e.g. tablet PC); PDA phone (e.g. BlackBerry, Palm Pilot); Smartphone; enterprise digital assistant; portable media player (i.e. MP3 or MP4 player); handheld video game console. No terms for health or health service outcomes will be included, to ensure that all applications of mobile technology in public health and health services are identified. Bibliographies of primary studies and review articles meeting the inclusion criteria will be searched manually to identify further eligible studies. Data on objective and self-reported outcomes and study quality will be independently extracted by two review authors. Where there are sufficient numbers of similar interventions, we will calculate and report pooled risk ratios or standardised mean differences using meta-analysis.DiscussionThis systematic review will provide recommendations on the use of mobile computing and communication technology in health care and public health and will guide future work on intervention development and primary research in this field.


Tobacco Control | 2009

Txt2stop: a pilot randomised controlled trial of mobile phone-based smoking cessation support

Caroline Free; Robyn Whittaker; Rosemary Knight; Tanya Abramsky; Anthony Rodgers; Ian Roberts

Aim: To conduct a pilot randomised controlled trial of mobile phone-based smoking cessation support intervention for the UK population. Design: Randomised controlled trial (txt2stop). Setting: Community. Participants: 200 participants responding to radio, poster and leaflet-based promotions regarding the trial. Main outcome measures: The response rate for the outcome measures planned for the main trial. Participants’ qualitative responses to open-ended questions about the intervention content. Secondary outcomes were the outcomes planned for the main trial including the point prevalence of self-reported smoking at 4 weeks and pooled effect estimate for the short-term results for the STOMP and txt2stop trials. Results: The response rate at 4 weeks was 96% and at 6 months was 92%. The results at 4 weeks show a doubling of self-reported quitting relative risk (RR) 2.08 (95% CI 1.11 to 3.89), 26% vs 12%. The pooled effect estimate combining txt2stop and a previous New Zealand trial in the short term is RR 2.18 (95% CI 1.79 to 2.65). Conclusions: Mobile phone-based smoking cessation is an innovative means of delivering smoking cessation support, which doubles the self-reported quit rate in the short term. It could represent an important, but as yet largely unused, medium to deliver age-appropriate public health measures. The long-term effect of this mobile phone-based smoking cessation support will be established by a large randomised controlled trial currently in recruitment.


Bulletin of The World Health Organization | 2011

Comparative effectiveness, safety and acceptability of medical abortion at home and in a clinic: a systematic review

Thoai D. Ngo; Min Hae Park; Haleema Shakur; Caroline Free

OBJECTIVE To compare medical abortion practised at home and in clinics in terms of effectiveness, safety and acceptability. METHODS A systematic search for randomized controlled trials and prospective cohort studies comparing home-based and clinic-based medical abortion was conducted. The Cochrane Central Register of Controlled Trials, EMBASE, MEDLINE and Popline were searched. Failure to abort completely, side-effects and acceptability were the main outcomes of interest. Odds ratios and their 95% confidence intervals (CIs) were calculated. Estimates were pooled using a random-effects model. FINDINGS Nine studies met the inclusion criteria (n = 4522 participants). All were prospective cohort studies that used mifepristone and misoprostol to induce abortion. Complete abortion was achieved by 86-97% of the women who underwent home-based abortion (n = 3478) and by 80-99% of those who underwent clinic-based abortion (n = 1044). Pooled analyses from all studies revealed no difference in complete abortion rates between groups (odds ratio = 0.8; 95% CI: 0.5-1.5). Serious complications from abortion were rare. Pain and vomiting lasted 0.3 days longer among women who took misoprostol at home rather than in clinic. Women who chose home-based medical abortion were more likely to be satisfied, to choose the method again and to recommend it to a friend than women who opted for medical abortion in a clinic. CONCLUSION Home-based abortion is safe under the conditions in place in the included studies. Prospective cohort studies have shown no differences in effectiveness or acceptability between home-based and clinic-based medical abortion across countries.


Reproductive Health | 2015

Mobile Technology for Improved Family Planning (MOTIF): the development of a mobile phone-based (mHealth) intervention to support post-abortion family planning (PAFP) in Cambodia.

Chris Smith; Uk Vannak; Ly Sokhey; Thoai D. Ngo; Judy Gold; Caroline Free

BackgroundThe objective of this paper is to outline the formative research process used to develop the MOTIF mobile phone-based (mHealth) intervention to support post-abortion family planning in Cambodia.MethodsThe formative research process involved literature reviews, interviews and focus group discussions with clients, and consultation with clinicians and organisations implementing mHealth activities in Cambodia. This process led to the development of a conceptual framework and the intervention.ResultsKey findings from the formative research included identification of the main reasons for non-use of contraception and patterns of mobile phone use in Cambodia. We drew on components of existing interventions and behaviour change theory to develop a conceptual framework. A multi-faceted voice-based intervention was designed to address health concerns and other key determinants of contraception use.ConclusionsFormative research was essential in order to develop an appropriate mHealth intervention to support post-abortion contraception in Cambodia. Each component of the formative research contributed to the final intervention design.


Journal of Medical Internet Research | 2012

What Young People Want From a Sexual Health Website: Design and Development of Sexunzipped

Ona McCarthy; Kenneth Carswell; Elizabeth Murray; Caroline Free; Fiona Stevenson; Julia Bailey

Background Sexual health education in the United Kingdom is of variable quality, typically focusing on the biological aspects of sex rather than on communication, relationships, and sexual pleasure. The Internet offers a unique opportunity to provide sexual health education to young people, since they can be difficult to engage but frequently use the Internet as a health information resource. Objectives To explore through qualitative research young people’s views on what elements of a sexual health website would be appealing and engaging, and their views on the content, design, and interactive features of the Sexunzipped intervention website. Methods We recruited 67 young people aged 16–22 years in London, UK. We held 21 focus groups and 6 one-to-one interviews to establish sexual health priorities, views on website look and feel, and what features of a sexual heath website would attract and engage them. Two researchers facilitated the focus groups, using a semistructured topic guide to lead the discussions and asking open questions to elicit a range of views. The discussions and interviews were audio recorded and detailed notes were made on key topics from the audio recording. Young people’s views influenced design templates for the content and interactive features of Sexunzipped. Results Young people particularly wanted straightforward information on sexual pleasure, sexually transmitted infections and pregnancy, how to communicate with partners, how to develop skills in giving pleasure, and emotions involved in sex and relationships. Focus group participants wanted social interaction with other young people online and wanted to see themselves reflected in some way such as through images or videos. Conclusions While it is challenging to meet all of young people’s technological and design requirements, consultation with the target audience is valuable and necessary in developing an online sexual health intervention. Young people are willing to talk about sensitive issues, enjoy the discussions, and can offer key insights that influence intervention development.


Trials | 2011

Using a business model approach and marketing techniques for recruitment to clinical trials

Alison McDonald; Shaun Treweek; Haleema Shakur; Caroline Free; Rosemary Knight; Chris Speed; Marion K Campbell

Randomised controlled trials (RCTs) are generally regarded as the gold standard for evaluating health care interventions. The level of uncertainty around a trials estimate of effect is, however, frequently linked to how successful the trial has been in recruiting and retaining participants. As recruitment is often slower or more difficult than expected, with many trials failing to reach their target sample size within the timescale and funding originally envisaged, the results are often less reliable than they could have been. The high number of trials that require an extension to the recruitment period in order to reach the required sample size potentially delays the introduction of more effective therapies into routine clinical practice. Moreover, it may result in less research being undertaken as resources are redirected to extending existing trials rather than funding additional studies.Poor recruitment to publicly-funded RCTs has been much debated but there remains remarkably little clear evidence as to why many trials fail to recruit well, which recruitment methods work, in which populations and settings and for what type of intervention. One proposed solution to improving recruitment and retention is to adopt methodology from the business world to inform and structure trial management techniques.We review what is known about interventions to improve recruitment to trials. We describe a proposed business approach to trials and discuss the implementation of using a business model, using insights gained from three case studies.


American Journal of Public Health | 2009

Factors associated with the sexual behavior of Canadian aboriginal young people and their implications for health promotion.

Karen Devries; Caroline Free; Elizabeth Saewyc

OBJECTIVES We examined factors associated with having ever had sex, having more than 1 lifetime sexual partner, and condom nonuse at last incident of sexual intercourse among Canadian Aboriginal young people. METHODS We conducted a secondary analysis of data from the 2003 British Columbia Adolescent Health Survey, a cross-sectional survey of young people in grades 7 through 12. RESULTS Of 1140 young Aboriginal men, 34% had ever had sex; of these, 63% had had more than 1 sexual partner, and 21% had not used a condom at their last incident of sexual intercourse. Of 1336 young Aboriginal women, 35% had ever had sex; of these, 56% had had more than 1 sexual partner, and 41% had not used a condom at their last incident of sexual intercourse. Frequent substance use, having been sexually abused, and having lived on a land reservation were strongly associated with sexual behavior outcomes. Feeling connected to family was strongly associated with increased condom use. CONCLUSIONS Sexual behavior change interventions for Aboriginal young people must move beyond the individual and incorporate interpersonal and structural dimensions. Interventions to reduce substance use and sexual abuse and promote feelings of family connectedness in this population should be explored. Young people living on land reserves need special attention.

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Thoai D. Ngo

Marie Stopes International

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