Adler, AJ; Casas, JP; Martin, N; Free, C; Perel, P; (2018) Cochrane corner: text messaging to improve adherence to drugs for secondary prevention of cardiovascular disease. Heart (British Cardiac Society). ISSN 1355-6037 DOI: https://doi.org/10.1136/heartjnl-2017-312888 Full text not available from this repository.

Barnard, S; Free, C; Bakolis, I; Turner, KME; Looker, KJ; Baraitser, P; (2018) Comparing the characteristics of users of an online service for STI self-sampling with clinic service users: a cross-sectional analysis. Sexually transmitted infections. ISSN 1368-4973 DOI: https://doi.org/10.1136/sextrans-2017-053302

McCarthy, O; Ahamed, I; Kulaeva, F; Tokhirov, R; Saibov, S; Vandewiele, M; Standaert, S; Leurent, B; Edwards, P; Palmer, M; +1 more... Free, C; (2018) A randomized controlled trial of an intervention delivered by mobile phone app instant messaging to increase the acceptability of effective contraception among young people in Tajikistan. Reproductive health, 15 (1). p. 28. ISSN 1742-4755 DOI: https://doi.org/10.1186/s12978-018-0473-z

McCarthy, O; Ahamed, I; Kulaeva, F; Tokhirov, R; Saibov, S; Vandewiele, M; Standaert, S; Leurent, B; Edwards, P; Palmer, M; +1 more... Free, C; (2018) Correction to: A randomized controlled trial of an intervention delivered by mobile phone app instant messaging to increase the acceptability of effective contraception among young people in Tajikistan. BMC. DOI: https://doi.org/10.1186/s12978-018-0496-5

McCarthy, OL; Wazwaz, O; Osorio Calderon, V; Jado, I; Saibov, S; Stavridis, A; López Gallardo, J; Tokhirov, R; Adada, S; Huaynoca, S; +4 more... Makleff, S; Vandewiele, M; Standaert, S; Free, C; (2018) Development of an intervention delivered by mobile phone aimed at decreasing unintended pregnancy among young people in three lower middle income countries. BMC public health, 18 (1). p. 576. ISSN 1471-2458 DOI: https://doi.org/10.1186/s12889-018-5477-7

Palmer, M; Sutherland, J; Barnard, S; Wynne, A; Rezel, E; Doel, A; Grigsby-Duffy, L; Edwards, S; Russell, S; Hotopf, E; +2 more... Perel, P; Free, C; (2018) The effectiveness of smoking cessation, physical activity/diet and alcohol reduction interventions delivered by mobile phones for the prevention of non-communicable diseases: A systematic review of randomised controlled trials. PloS one, 13 (1). e0189801. ISSN 1932-6203 DOI: https://doi.org/10.1371/journal.pone.0189801

Palmer, MJ; Barnard, S; Perel, P; Free, C; (2018) Mobile phone-based interventions for improving adherence to medication prescribed for the primary prevention of cardiovascular disease in adults. The Cochrane database of systematic reviews, 6. CD012675. ISSN 1469-493X DOI: https://doi.org/10.1002/14651858.CD012675.pub2

Smith, C; Edwards, P; Free, C; (2018) Assessing the validity and reliability of self-report data on contraception use in the MObile Technology for Improved Family Planning (MOTIF) randomised controlled trial. Reproductive health, 15 (1). p. 50. ISSN 1742-4755 DOI: https://doi.org/10.1186/s12978-018-0494-7

Turner, KM; Zienkiewicz, AK; Syred, J; Looker, KJ; de Sa, J; Brady, M; Free, C; Holdsworth, G; Baraitser, P; (2018) Web-Based Activity Within a Sexual Health Economy: Observational Study. Journal of medical Internet research, 20 (3). e74. ISSN 1439-4456 DOI: https://doi.org/10.2196/jmir.8101

Adler, AJ; Martin, N; Mariani, J; Tajer, CD; Owolabi, OO; Free, C; Serrano, NC; Casas, JP; Perel, P; (2017) Mobile phone text messaging to improve medication adherence in secondary prevention of cardiovascular disease. The Cochrane database of systematic reviews, 4. CD011851. ISSN 1469-493X DOI: https://doi.org/10.1002/14651858.CD011851.pub2

McCarthy, O; Leurent, B; Edwards, P; Tokhirov, R; Free, C; (2017) A randomised controlled trial of an intervention delivered by app instant messaging to increase the acceptability of effective contraception among young people in Tajikistan: study protocol. BMJ open, 7 (9). e017606. ISSN 2044-6055 DOI: https://doi.org/10.1136/bmjopen-2017-017606

McCarthy, OL; Osorio Calderon, V; Makleff, S; Huaynoca, S; Leurent, B; Edwards, P; Lopez Gallardo, J; Free, C; (2017) An Intervention Delivered by App Instant Messaging to Increase Acceptability and Use of Effective Contraception Among Young Women in Bolivia: Protocol of a Randomized Controlled Trial. JMIR research protocols, 6 (12). e252. ISSN 1929-0748 DOI: https://doi.org/10.2196/resprot.8679

McCarthy, OL; Wazwaz, O; Jado, I; Leurent, B; Edwards, P; Adada, S; Stavridis, A; Free, C; (2017) An intervention delivered by text message to increase the acceptability of effective contraception among young women in Palestine: study protocol for a randomised controlled trial. Trials, 18 (1). p. 454. ISSN 1745-6215 DOI: https://doi.org/10.1186/s13063-017-2191-1

Palmer, Melissa J; Barnard, Sharmani; Perel, Pablo; Free, Caroline; (2017) Mobile phone-based interventions for improving adherence to medication prescribed for the primary prevention of cardiovascular disease in adults. Cochrane Database of Systematic Reviews, 2017 (5). DOI: https://doi.org/10.1002/14651858.cd012675

Smith, C; (2017) Increasing contraception use with mobile phone-based interventions. PhD (research paper style) thesis, London School of Hygiene & Tropical Medicine. DOI: https://doi.org/10.17037/PUBS.03894556

Smith, C; Jarvis, C; Free, C; (2017) Assessing loss to follow-up in the MObile Technology for Improved Family Planning (MOTIF) randomised controlled trial. Trials, 18 (1). p. 577. ISSN 1745-6215 DOI: https://doi.org/10.1186/s13063-017-2316-6

Smith, C; Ly, S; Uk, V; Warnock, R; Edwards, P; Free, C; (2017) Process evaluation of a mobile phone-based intervention to support post-abortion contraception in Cambodia. Contracept Reprod Med, 2. p. 16. ISSN 2055-7426 DOI: https://doi.org/10.1186/s40834-017-0043-8

Smith, C; Ly, S; Uk, V; Warnock, R; Free, C; (2017) Women's views and experiences of a mobile phone-based intervention to support post-abortion contraception in Cambodia. Reproductive health, 14 (1). p. 72. ISSN 1742-4755 DOI: https://doi.org/10.1186/s12978-017-0329-y

Wellings, K; Mehl, GL; Free, CJ; (2017) eSexual health interventions: promising, but more evidence needed. The lancet Public health, 2 (4). e162-e163. ISSN 2468-2667 DOI: https://doi.org/10.1016/S2468-2667(17)30051-8

Wilson, E; Free, C; Morris, TP; Syred, J; Ahamed, I; Menon-Johansson, AS; Palmer, MJ; Barnard, S; Rezel, E; Baraitser, P; (2017) Internet-accessed sexually transmitted infection (e-STI) testing and results service: A randomised, single-blind, controlled trial. PLoS medicine, 14 (12). e1002479. ISSN 1549-1277 DOI: https://doi.org/10.1371/journal.pmed.1002479

Burns, K; Keating, P; Free, C; (2016) A systematic review of randomised control trials of sexual health interventions delivered by mobile technologies. BMC public health, 16 (1). p. 778. ISSN 1471-2458 DOI: https://doi.org/10.1186/s12889-016-3408-z

Free, C; McCarthy, O; French, RS; Wellings, K; Michie, S; Roberts, I; Devries, K; Rathod, S; Bailey, J; Syred, J; +4 more... Edwards, P; Hart, G; Palmer, M; Baraitser, P; (2016) Can text messages increase safer sex behaviours in young people? Intervention development and pilot randomised controlled trial. Health technology assessment (Winchester, England), 20 (57). pp. 1-82. ISSN 1366-5278 DOI: https://doi.org/10.3310/hta20570

French, RS; McCarthy, O; Baraitser, P; Wellings, K; Bailey, JV; Free, C; (2016) Young People's Views and Experiences of a Mobile Phone Texting Intervention to Promote Safer Sex Behavior. JMIR mHealth and uHealth, 4 (2). e26. ISSN 2291-5222 DOI: https://doi.org/10.2196/mhealth.4302

Herrett, E; Williamson, E; van Staa, T; Ranopa, M; Free, C; Chadborn, T; Goldacre, B; Smeeth, L; (2016) Text messaging reminders for influenza vaccine in primary care: a cluster randomised controlled trial (TXT4FLUJAB). BMJ open, 6 (2). e010069. ISSN 2044-6055 DOI: https://doi.org/10.1136/bmjopen-2015-010069

McCarthy, O; French, RS; Roberts, I; Free, C; (2016) Simple steps to develop trial follow-up procedures. Trials, 17 (1). p. 28. ISSN 1745-6215 DOI: https://doi.org/10.1186/s13063-016-1155-1

McCarthy, OL; French, RS; Baraitser, P; Roberts, I; Rathod, SD; Devries, K; Bailey, JV; Edwards, P; Wellings, K; Michie, S; +1 more... Free, C; (2016) Safetxt: a pilot randomised controlled trial of an intervention delivered by mobile phone to increase safer sex behaviours in young people. BMJ open, 6 (12). e013045. ISSN 2044-6055 DOI: https://doi.org/10.1136/bmjopen-2016-013045

Smith, C; Vannak, U; Sokhey, L; Ngo, TD; Gold, J; Free, C; (2016) 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. Reproductive health, 13 (1). p. 1. ISSN 1742-4755 DOI: https://doi.org/10.1186/s12978-015-0112-x

Wilson, E; Free, C; Morris, TP; Kenward, MG; Syred, J; Baraitser, P; (2016) Can Internet-Based Sexual Health Services Increase Diagnoses of Sexually Transmitted Infections (STI)? Protocol for a Randomized Evaluation of an Internet-Based STI Testing and Results Service. JMIR research protocols, 5 (1). e9. ISSN 1929-0748 DOI: https://doi.org/10.2196/resprot.4094

Wilson, E; Free, C; Morris, TP; Syred, J; Baraitser, P; (2016) Addendum to: Can Internet-Based Sexual Health Services Increase Diagnoses of Sexually Transmitted Infections (STI)? Protocol for a Randomized Evaluation of an Internet-Based STI Testing and Results Service. JMIR research protocols, 5 (3). e141. ISSN 1929-0748 DOI: https://doi.org/10.1371/journal.pmed.1002479

Ybarra, ML; Jiang, Y; Free, C; Abroms, LC; Whittaker, R; (2016) Participant-level meta-analysis of mobile phone-based interventions for smoking cessation across different countries. Preventive medicine, 89. pp. 90-7. ISSN 0091-7435 DOI: https://doi.org/10.1016/j.ypmed.2016.05.002 Full text not available from this repository.

Baraitser, P; Syred, J; Spencer-Hughes, V; Howroyd, C; Free, C; Holdsworth, G; (2015) How online sexual health services could work; generating theory to support development. BMC health services research, 15. p. 8. ISSN 1472-6963 DOI: https://doi.org/10.1186/s12913-015-1200-x

French, R; McCarthy, O; Baraitser, P; Wellings, K; Bailey, J; Free, C; (2015) Young people’s views and experiences of a mobile phone texting intervention to promote safer sex behaviour. Journal of Medical Internet Research. http://researchonline.lshtm.ac.uk/id/eprint/2534525

Smith, C; Gold, J; Ngo, T; Sumpter, C; Free, C; (2015) Mobile phone-based interventions for improving contraception use (Review). The Cochrane database of systematic reviews (6). ISSN 1469-493X DOI: https://doi.org/10.1002/14651858.CD011159

Smith, C; Gold, J; Ngo, TD; Sumpter, C; Free, C; (2015) Mobile phone-based interventions for improving contraception use. The Cochrane database of systematic reviews, 6. CD011159. ISSN 1469-493X DOI: https://doi.org/10.1002/14651858.CD011159.pub2

Smith, C; Ngo, TD; Gold, J; Edwards, P; Vannak, U; Sokhey, L; Machiyama, K; Slaymaker, E; Warnock, R; McCarthy, O; +1 more... Free, C; (2015) Effect of a mobile phone-based intervention on post-abortion contraception: a randomized controlled trial in Cambodia. Bulletin of the World Health Organization, 93 (12). 842-850A. ISSN 0042-9686 DOI: https://doi.org/10.2471/BLT.15.160267

Galli, L; Knight, R; Robertson, S; Hoile, E; Oladapo, O; Francis, D; Free, C; (2014) Using marketing theory to inform strategies for recruitment: a recruitment optimisation model and the txt2stop experience. Trials, 15 (1). p. 182. ISSN 1745-6215 DOI: https://doi.org/10.1186/1745-6215-15-182

Herrett, E; van Staa, T; Free, C; Smeeth, L; (2014) Text messaging reminders for influenza vaccine in primary care: protocol for a cluster randomised controlled trial (TXT4FLUJAB). BMJ open, 4 (5). e004633. ISSN 2044-6055 DOI: https://doi.org/10.1136/bmjopen-2013-004633

Kaufman, ZA; (2014) The GOAL Trial: sport-based HIV prevention in South African schools. PhD (research paper style) thesis, London School of Hygiene & Tropical Medicine. DOI: https://doi.org/10.17037/PUBS.01941262

Ngo, TD; Free, C; Le, HT; Edwards, P; Pham, KH; Nguyen, YB; Nguyen, TH; (2014) Service users' attributes associated with the uptake of medical versus surgical abortion at public health facilities in Vietnam. International journal of gynaecology and obstetrics, 125 (3). pp. 247-52. ISSN 0020-7292 DOI: https://doi.org/10.1016/j.ijgo.2013.11.015 Full text not available from this repository.

Ngo, TD; Free, C; Le, HT; Edwards, P; Pham, KH; Nguyen, YB; Nguyen, TH; (2014) Attributes and perspectives of public providers related to provision of medical abortion at public health facilities in Vietnam: a cross-sectional study in three provinces. International journal of women's health, 6. pp. 789-97. ISSN 1179-1411 DOI: https://doi.org/10.2147/IJWH.S63261

Ngo, TD; Free, C; Le, HT; Edwards, P; Pham, KH; Nguyen, YB; Nguyen, TH; (2014) Women's perspectives on termination service delivery in Vietnam: a cross-sectional survey in three provinces. International journal of women's health, 6. pp. 927-33. ISSN 1179-1411 DOI: https://doi.org/10.2147/IJWH.S72343

Singh, NS; (2014) Community-based and Innovative Technological Approaches to Improve Child Nutrition in India. PhD thesis, London School of Hygiene & Tropical Medicine. DOI: https://doi.org/10.17037/PUBS.02030984

Smith, C; Gold, J; Ngo, T; Sumpter, C; Free, C; (2014) Mobile phone-based interventions for improving contraception use (Protocol). The Cochrane database of systematic reviews. ISSN 1469-493X DOI: https://doi.org/10.1002/14651858.CD011159 Full text not available from this repository.

Smith, C; Ngo, TD; Edwards, P; Free, C; (2014) MObile Technology for Improved Family Planning: update to randomised controlled trial protocol. Trials, 15 (1). p. 440. ISSN 1745-6215 DOI: https://doi.org/10.1186/1745-6215-15-440

Bailey, JV; Pavlou, M; Copas, A; McCarthy, O; Carswell, K; Rait, G; Hart, G; Nazareth, I; Free, C; French, R; +1 more... Murray, E; (2013) The Sexunzipped trial: optimizing the design of online randomized controlled trials. Journal of medical Internet research, 15 (12). e278. ISSN 1439-4456 DOI: https://doi.org/10.2196/jmir.2668

Douglas, N; Free, C; (2013) 'Someone batting in my corner': experiences of smoking-cessation support via text message. The British journal of general practice, 63 (616). pp. 768-76. ISSN 0960-1643 DOI: https://doi.org/10.3399/bjgp13X674459

Free, C; (2013) Text messaging to prevent onset of type 2 diabetes. The lancet Diabetes & endocrinology, 1 (3). pp. 165-6. ISSN 2213-8587 DOI: https://doi.org/10.1016/S2213-8587(13)70101-3 Full text not available from this repository.

Free, C; Phillips, G; Galli, L; Watson, L; Felix, L; Edwards, P; Patel, V; Haines, A; (2013) The effectiveness of mobile-health technology-based health behaviour change or disease management interventions for health care consumers: a systematic review. PLoS medicine, 10 (1). e1001362. ISSN 1549-1277 DOI: https://doi.org/10.1371/journal.pmed.1001362

Free, C; Phillips, G; Watson, L; Galli, L; Felix, L; Edwards, P; Patel, V; Haines, A; (2013) The effectiveness of mobile-health technologies to improve health care service delivery processes: a systematic review and meta-analysis. PLoS medicine, 10 (1). e1001363. ISSN 1549-1277 DOI: https://doi.org/10.1371/journal.pmed.1001363

Guerriero, C; Cairns, J; Roberts, I; Rodgers, A; Whittaker, R; Free, C; (2013) The cost-effectiveness of smoking cessation support delivered by mobile phone text messaging: Txt2stop. The European journal of health economics, 14 (5). pp. 789-97. ISSN 1618-7598 DOI: https://doi.org/10.1007/s10198-012-0424-5

Ngo, TD; Free, C; Le, HT; Edwards, P; Pham, KH; Nguyen, YB; Nguyen, TH; (2013) Knowledge and provision practices regarding medical abortion among public providers in Hanoi, Khanh Hoa, and Ho Chi Minh City, Vietnam. International journal of gynaecology and obstetrics, 124 (3). pp. 216-21. ISSN 0020-7292 DOI: https://doi.org/10.1016/j.ijgo.2013.08.015 Full text not available from this repository.

Ngo, TD; Park, MH; Free, C; (2013) Safety and effectiveness of termination services performed by doctors versus midlevel providers: a systematic review and analysis. International journal of women's health, 5. pp. 9-17. ISSN 1179-1411 DOI: https://doi.org/10.2147/IJWH.S39627

Smith, AJ; Tennison, I; Roberts, I; Cairns, J; Free, C; (2013) The carbon footprint of behavioural support services for smoking cessation. Tobacco control, 22 (5). pp. 302-7. ISSN 0964-4563 DOI: https://doi.org/10.1136/tobaccocontrol-2012-050672 Full text not available from this repository.

Smith, C; Vannak, U; Sokhey, L; Ngo, TD; Gold, J; Khut, K; Edwards, P; Rathavy, T; Free, C; (2013) MObile Technology for Improved Family Planning Services (MOTIF): study protocol for a randomised controlled trial. Trials, 14. p. 427. ISSN 1745-6215 DOI: https://doi.org/10.1186/1745-6215-14-427

Devries, KM; Free, CJ; Saewyc, E; (2012) “I Like to Think I’m a Pretty Safe Guy but Sometimes a 40-Pounder* Will Change That”: A Mixed Methods Study of Substance Use and Sexual Risk Among Aboriginal Young People. Journal of aboriginal health, 9 (1). ISSN 1710-0712 http://researchonline.lshtm.ac.uk/id/eprint/4018446 Full text not available from this repository.

Devries, KM; Kenward, MG; Free, CJ; (2012) Preventing Smoking Relapse Using Text Messages: Analysis of Data From the txt2stop Trial. Nicotine & tobacco research, 15 (1). pp. 77-82. ISSN 1462-2203 DOI: https://doi.org/10.1093/ntr/nts086

Gautham, M; Free, C; Girdhari Bora, Manthan project; (2012) Web seminar: Mobile technologies for health. [Video] https://sas.elluminate.com/site/external/recording...

McCarthy, O; Carswell, K; Murray, E; Free, C; Stevenson, F; Bailey, JV; (2012) What young people want from a sexual health website: design and development of sexunzipped. Journal of medical Internet research, 14 (5). e127. ISSN 1439-4456 DOI: https://doi.org/10.2196/jmir.2116

Michie, S; Free, C; West, R; (2012) Characterising the ‘Txt2Stop’ Smoking Cessation Text Messaging Intervention in Terms of Behaviour Change Techniques. Journal of smoking cessation, 7 (1). pp. 55-60. ISSN 1834-2612 DOI: https://doi.org/10.1017/jsc.2012.12

Wells, J; Srinath, A; Free, C; Forde, G; Forde, C; (2012) Cost-effectiveness analysis of a mobile phone SMS text-based smoking cessation intervention. University of Toronto Medical Journal, 89 (3). pp. 160-165. ISSN 0833-2207 http://www.scopus.com/inward/record.url?eid=2-s2.0... Full text not available from this repository.

LSHTM; (2011) Txt2Stop: Text Messaging Doubled Smoking Quit Rates - 5 July 2011. [Podcast] http://soundcloud.com/lshtm/txt2stop-text-messagin...

Bailey, J; McCarthy, O; Carswell, K; Murray, E; Rait, G; Hart, G; Nazareth, I; Free, C; French, R; Stevenson, F; (2011) The Sexunzipped Website for Sexual Wellbeing for Young People: Early Results of a Pilot Online RCT. [Conference or Workshop Item] http://researchonline.lshtm.ac.uk/id/eprint/562 Full text not available from this repository.

Devries, KM; Free, CJ; (2011) Boyfriends and booty calls: sexual partnership patterns among Canadian Aboriginal young people. Canadian journal of public health = Revue canadienne de sante publique, 102 (1). pp. 13-7. ISSN 0008-4263 http://researchonline.lshtm.ac.uk/id/eprint/924

Devries, KM; Free, CJ; (2011) Are those who join a trial in response to a scarcity message more likely to drop out? Contemporary clinical trials, 32 (4). p. 475. ISSN 1551-7144 DOI: https://doi.org/10.1016/j.cct.2011.03.013

Devries, KM; Free, CJ; (2011) “It’s Not Something You Have to Be Scared About”: Attitudes towards Pregnancy and Fertility Among Canadian Aboriginal Young People. Journal of Aboriginal Health, 7 (1). http://www.naho.ca/journal/2011/03/20/volume-7-iss... Full text not available from this repository.

Free, C; Knight, R; Robertson, S; Whittaker, R; Edwards, P; Zhou, W; Rodgers, A; Cairns, J; Kenward, MG; Roberts, I; (2011) Smoking cessation support delivered via mobile phone text messaging (txt2stop): a single-blind, randomised trial. Lancet, 378 (9785). pp. 49-55. ISSN 0140-6736 DOI: https://doi.org/10.1016/S0140-6736(11)60701-0

Free, C; Roberts, IG; Abramsky, T; Fitzgerald, M; Wensley, F; (2011) A systematic review of randomised controlled trials of interventions promoting effective condom use. Journal of epidemiology and community health, 65 (2). pp. 100-110. ISSN 0143-005X DOI: https://doi.org/10.1136/jech.2008.085456

Harris, J; Felix, L; Miners, A; Murray, E; Michie, S; Ferguson, E; Free, C; Lock, K; Landon, J; Edwards, P; (2011) Adaptive e-learning to improve dietary behaviour: a systematic review and cost-effectiveness analysis. Health technology assessment (Winchester, England), 15 (37). pp. 1-160. ISSN 1366-5278 DOI: https://doi.org/10.3310/hta15370

McCarthy, O; Carswell, K; Free, C; Stevenson, F; Murray, E; Hart, G; French, R; Bailey, J; (2011) Developing the 'Sexunzipped' Website: Young People's Views on the Design and Content of an Online Sexual Health Intervention. [Conference or Workshop Item] http://researchonline.lshtm.ac.uk/id/eprint/563 Full text not available from this repository.

McDonald, AM; Treweek, S; Shakur, H; Free, C; Knight, R; Speed, C; Campbell, MK; (2011) Developing a placebo-controlled trial in surgery: issues of design, acceptability and feasibility. Trials, 12. p. 50. ISSN 1745-6215 DOI: https://doi.org/10.1186/1745-6215-12-50

McDonald, AM; Treweek, S; Shakur, H; Free, C; Knight, R; Speed, C; Campbell, MK; (2011) Using a business model approach and marketing techniques for recruitment to clinical trials. Trials, 12. p. 74. ISSN 1745-6215 DOI: https://doi.org/10.1186/1745-6215-12-74

Ngo, TD; Park, MH; Shakur, H; Free, C; (2011) Comparative effectiveness, safety and acceptability of medical abortion at home and in a clinic: a systematic review. Bulletin of the World Health Organization, 89 (5). pp. 360-70. ISSN 0042-9686 DOI: https://doi.org/10.2471/BLT.10.084046

Severi, E; Free, C; Knight, R; Robertson, S; Edwards, P; Hoile, E; (2011) Two controlled trials to increase participant retention in a randomized controlled trial of mobile phone-based smoking cessation support in the United Kingdom. Clinical trials (London, England), 8 (5). pp. 654-660. ISSN 1740-7745 DOI: https://doi.org/10.1177/1740774511416524

Devries, KM; Free, C; (2010) 'I told him not to use condoms': masculinities, femininities and sexual health of Aboriginal Canadian young people. Sociology of health & illness, 32 (6). pp. 827-42. ISSN 0141-9889 DOI: https://doi.org/10.1111/j.1467-9566.2010.01242.x Full text not available from this repository.

Edwards, P; Felix, L; Harris, J; Ferguson, E; Free, C; Landon, J; Lock, K; Michie, S; Miners, A; Murray, E; (2010) Assessing the effectiveness and cost effectiveness of adaptive e-Learning to improve dietary behaviour: protocol for a systematic review. BMC public health, 10. p. 200. ISSN 1471-2458 DOI: https://doi.org/10.1186/1471-2458-10-200

Free, C; Hoile, E; Robertson, S; Knight, R; (2010) Three controlled trials of interventions to increase recruitment to a randomized controlled trial of mobile phone based smoking cessation support. Clinical trials (London, England), 7 (3). pp. 265-73. ISSN 1740-7745 DOI: https://doi.org/10.1177/1740774510367687

Free, C; Phillips, G; Felix, L; Galli, L; Patel, V; Edwards, P; (2010) The effectiveness of M-health technologies for improving health and health services: a systematic review protocol. BMC research notes, 3. p. 250. ISSN 1756-0500 DOI: https://doi.org/10.1186/1756-0500-3-250

Free, CJ; Hoile, E; Knight, R; Robertson, S; Devries, KM; (2010) Do messages of scarcity increase trial recruitment? Contemporary clinical trials, 32 (1). pp. 36-9. ISSN 1551-7144 DOI: https://doi.org/10.1016/j.cct.2010.09.002 Full text not available from this repository.

Devries, KM; Free, CJ; Morison, L; Saewyc, E; (2009) Factors associated with pregnancy and STI among Aboriginal students in British Columbia. Canadian journal of public health = Revue canadienne de sante publique, 100 (3). pp. 226-30. ISSN 0008-4263 http://researchonline.lshtm.ac.uk/id/eprint/5271 Full text not available from this repository.

Free, C; Whittaker, R; Knight, R; Abramsky, T; Rodgers, A; Roberts, IG; (2009) Txt2stop: a pilot randomised controlled trial of mobile phone-based smoking cessation support. Tobacco control, 18 (2). pp. 88-91. ISSN 0964-4563 DOI: https://doi.org/10.1136/tc.2008.026146

Devries, KM; Free, CJ; Morison, L; Saewyc, E; (2008) Factors Associated With the Sexual Behavior of Canadian Aboriginal Young People and Their Implications for Health Promotion. American journal of public health, 99 (5). pp. 855-62. ISSN 0090-0036 DOI: https://doi.org/10.2105/AJPH.2007.132597

Kim, CR; Free, C; (2008) Recent evaluations of the peer-led approach in adolescent sexual health education: a systematic review. Perspectives on sexual and reproductive health, 40 (3). pp. 144-51. ISSN 1538-6341 DOI: https://doi.org/10.1363/4014408 Full text not available from this repository.

Kim, CR; Free, C; (2008) Recent evaluations of the peer-led approach in adolescent sexual health education: a systematic review. International family planning perspectives, 34 (2). pp. 89-96. ISSN 0190-3187 DOI: https://doi.org/10.1363/ifpp.34.0089.08 Full text not available from this repository.

Devries, KM; Free, C; Jategaonkar, N; (2007) Factors associated with condom use among Aboriginal people: a systematic review. Canadian journal of public health = Revue canadienne de sante publique, 98 (1). pp. 48-54. ISSN 0008-4263 http://researchonline.lshtm.ac.uk/id/eprint/10395 Full text not available from this repository.

Free, C; Roberts, I; McGuire, M; (2007) Sex workers' accounts of condom use: implications for condom production, promotion and health policy. The journal of family planning and reproductive health care / Faculty of Family Planning & Reproductive Health Care, Royal College of Obstetricians & Gynaecologists, 33 (2). pp. 107-11. ISSN 1471-1893 DOI: https://doi.org/10.1783/147118907780254006 Full text not available from this repository.

Cheung, E; Free, C; (2005) Factors influencing young women's decision making regarding hormonal contraceptives: a qualitative study. Contraception, 71 (6). pp. 426-431. ISSN 0010-7824 DOI: https://doi.org/10.1016/j.contraception.2004.12.010 Full text not available from this repository.

Free, C; (2005) Transcultural communication and ethnic comparisons in the experience of services. The British journal of general practice, 55 (514). pp. 339-40. ISSN 0960-1643 http://researchonline.lshtm.ac.uk/id/eprint/13654 Full text not available from this repository.

Free, C; (2005) Advice about sexual health for young people - Local service needs to provide confidentiality, support, time and information. BMJ. p. 107. ISSN 1468-5833 DOI: https://doi.org/10.1136/bmj.330.7483.107

Free, C; Ogden, J; (2005) Emergency contraception use and non-use in young women: the application of a contextual and dynamic model. British journal of health psychology, 10 (Pt 2). pp. 237-53. ISSN 1359-107X DOI: https://doi.org/10.1348/135910705X25985 Full text not available from this repository.

Free, C; Ogden, J; Lee, R; (2005) Young women's contraception use as a contextual and dynamic behaviour: A qualitative study. Psychology & health, 20 (5). pp. 673-690. ISSN 0887-0446 DOI: https://doi.org/10.1080/08870440412331337110 Full text not available from this repository.

Green, J; Free, C; Bhavnani, V; Newman, T; (2005) Translators and mediators: bilingual young people's accounts of their interpreting work in health care. Social science & medicine (1982), 60 (9). pp. 2097-2110. ISSN 0277-9536 DOI: https://doi.org/10.1016/j.socscimed.2004.08.067 Full text not available from this repository.

Free, C; Ogden, J; (2004) Contraceptive risk and compensatory behaviour in young people in education post-16 years: a cross-sectional study. The journal of family planning and reproductive health care / Faculty of Family Planning & Reproductive Health Care, Royal College of Obstetricians & Gynaecologists, 30 (2). pp. 91-4. ISSN 1471-1893 DOI: https://doi.org/10.1783/147118904322995447 Full text not available from this repository.

Free, C; (2003) Teenage Pregnancy. In: Jones, R; Britten, N; Culpepper, L; Gass, D; Grol, R; Mant, D; Silagy, C, (eds.) Oxford Textbook of Primary Care. UNSPECIFIED. http://researchonline.lshtm.ac.uk/id/eprint/14389 Full text not available from this repository.

Free, C; Green, J; Bhavnani, V; Newman, A; (2003) Bilingual young people's experiences of interpreting in primary care: a qualitative study. The British journal of general practice, 53 (492). pp. 530-5. ISSN 0960-1643 http://researchonline.lshtm.ac.uk/id/eprint/15146 Full text not available from this repository.

Free, C; Lee, R; Ogden, J; (2003) A contextual and dynamic model of young women?s contraception use: changes in young women?s contraception use over time. [Conference or Workshop Item] http://researchonline.lshtm.ac.uk/id/eprint/14374 Full text not available from this repository.

Free, C; Lee, R; Ogden, J; (2003) A contextual and dynamic model of young women?s contraception use: key themes. [Conference or Workshop Item] http://researchonline.lshtm.ac.uk/id/eprint/14375 Full text not available from this repository.

Free, C; Ogden, J; (2003) What young people do when contraception goes wrong. [Conference or Workshop Item] http://researchonline.lshtm.ac.uk/id/eprint/14378 Full text not available from this repository.

Free, C; (2002) The use of Emergency Contraception. [Conference or Workshop Item] http://researchonline.lshtm.ac.uk/id/eprint/14390 Full text not available from this repository.

Free, C; Bhavnani, V; Green, J; Newman, T; (2002) The experiences of bilingual children interpreting in primary care settings. [Conference or Workshop Item] http://researchonline.lshtm.ac.uk/id/eprint/14384 Full text not available from this repository.

Free, C; Lee, R; Ogden, J; (2002) Young women's accounts of the factors influencing their use and non-use of emergency contraception: a depth interview study. BMJ (Clinical research ed), 325 (7377). pp. 1393-1396. ISSN 0959-8138 DOI: https://doi.org/10.1136/bmj.325.7377.1393

Free, C; Ogden, J; Lee, R; (2002) Within subject differences between episodes of use of emergency contraception and episodes of non use of emergency contraception -implications for clinicians and services. [Conference or Workshop Item] http://researchonline.lshtm.ac.uk/id/eprint/14379 Full text not available from this repository.

Free, C; Ogden, J; Lee, R; (2002) Young women's accounts of the factors influencing their use and non use of emergency contraception. [Conference or Workshop Item] http://researchonline.lshtm.ac.uk/id/eprint/14380 Full text not available from this repository.

Free, C; Dawe, A; Macey, S; Mawer, C; (2001) Evaluating and developing contraceptive services: the results of an audit of the North Lambeth Primary Care Commissioning Group. The journal of family planning and reproductive health care / Faculty of Family Planning & Reproductive Health Care, Royal College of Obstetricians & Gynaecologists, 27 (1). pp. 22-8. ISSN 1471-1893 DOI: https://doi.org/10.1783/147118901101195065 Full text not available from this repository.

Free, C; Ogden, J; (2001) To use or not to use emergency contraception? Within subject attitudinal and situational differences between the last episode of emergency contraception use and the last episode of contraceptive risk not followed by emergency contraception use. [Conference or Workshop Item] http://researchonline.lshtm.ac.uk/id/eprint/14377 Full text not available from this repository.

Free, C; Ogden, J; Lee, R; (2001) Emergency contraception use in young women: differences between users and non users. [Conference or Workshop Item] http://researchonline.lshtm.ac.uk/id/eprint/14376 Full text not available from this repository.