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Modelling the potential impact of providing preexposure prophylaxis in pregnant and breastfeeding women in South Africa.

Joseph Davey DL, Bekker LG, Gomba Y, Coates T, Myer L, Johnson LF.

AIDS. 2019 Jul 1;33(8):1391-1395. doi: 10.1097/QAD.0000000000002221.


The use of mathematical modeling studies for evidence synthesis and guideline development: A glossary.

Porgo TV, Norris SL, Salanti G, Johnson LF, Simpson JA, Low N, Egger M, Althaus CL.

Res Synth Methods. 2019 Mar;10(1):125-133. doi: 10.1002/jrsm.1333. Epub 2019 Jan 8.


Population-level Mortality Associated with HIV Exposure in HIV-uninfected Infants in Botswana and South Africa: A Model-based Evaluation.

Slogrove AL MBChB, MMed, PhD, Johnson LF PhD, Powis KM MD, MBA.

J Trop Pediatr. 2018 Oct 12. doi: 10.1093/tropej/fmy064. [Epub ahead of print]


Adult gonorrhea, chlamydia and syphilis prevalence, incidence, treatment and syndromic case reporting in South Africa: Estimates using the Spectrum-STI model, 1990-2017.

Kularatne RS, Niit R, Rowley J, Kufa-Chakezha T, Peters RPH, Taylor MM, Johnson LF, Korenromp EL.

PLoS One. 2018 Oct 15;13(10):e0205863. doi: 10.1371/journal.pone.0205863. eCollection 2018.


Population-level HIV incidence estimates using a combination of synthetic cohort and recency biomarker approaches in KwaZulu-Natal, South Africa.

Grebe E, Welte A, Johnson LF, van Cutsem G, Puren A, Ellman T, Etard JF; Consortium for the Evaluation and Performance of HIV Incidence Assays (CEPHIA), Huerga H.

PLoS One. 2018 Sep 13;13(9):e0203638. doi: 10.1371/journal.pone.0203638. eCollection 2018.


Are associations between HIV and human papillomavirus transmission due to behavioural confounding or biological effects?

van Schalkwyk C, Moodley J, Welte A, Johnson LF.

Sex Transm Infect. 2019 Mar;95(2):122-128. doi: 10.1136/sextrans-2018-053558. Epub 2018 Aug 31.


Precarious transition: a mortality study of South African ex-miners.

Bloch K, Johnson LF, Nkosi M, Ehrlich R.

BMC Public Health. 2018 Jul 11;18(1):862. doi: 10.1186/s12889-018-5749-2.


Age bias in survey sampling and implications for estimating HIV prevalence in men who have sex with men: insights from mathematical modelling.

Johnson LF, Mulongeni P, Marr A, Lane T.

Epidemiol Infect. 2018 Jun;146(8):1036-1042. doi: 10.1017/S0950268818000961. Epub 2018 Apr 30.


HIV epidemic drivers in South Africa: A model-based evaluation of factors accounting for inter-provincial differences in HIV prevalence and incidence trends.

Johnson LF, Dorrington RE, Moolla H.

South Afr J HIV Med. 2017 Jul 28;18(1):695. doi: 10.4102/sajhivmed.v18i1.695. eCollection 2017.


Progress towards the 2020 targets for HIV diagnosis and antiretroviral treatment in South Africa.

Johnson LF, Dorrington RE, Moolla H.

South Afr J HIV Med. 2017 Jul 27;18(1):694. doi: 10.4102/sajhivmed.v18i1.694. eCollection 2017.


Estimating the impact of antiretroviral treatment on adult mortality trends in South Africa: A mathematical modelling study.

Johnson LF, May MT, Dorrington RE, Cornell M, Boulle A, Egger M, Davies MA.

PLoS Med. 2017 Dec 12;14(12):e1002468. doi: 10.1371/journal.pmed.1002468. eCollection 2017 Dec.


Changing the South African national antiretroviral therapy guidelines: The role of cost modelling.

Meyer-Rath G, Johnson LF, Pillay Y, Blecher M, Brennan AT, Long L, Moultrie H, Sanne I, Fox MP, Rosen S.

PLoS One. 2017 Oct 30;12(10):e0186557. doi: 10.1371/journal.pone.0186557. eCollection 2017.


Twelve-year mortality in adults initiating antiretroviral therapy in South Africa.

Cornell M, Johnson LF, Wood R, Tanser F, Fox MP, Prozesky H, Schomaker M, Egger M, Davies MA, Boulle A; International Epidemiology Databases to Evaluate AIDS-Southern Africa collaboration.

J Int AIDS Soc. 2017 Sep 25;20(1):21902. doi: 10.7448/IAS.20.1.21902.


All-cause mortality in HIV-positive adults starting combination antiretroviral therapy: correcting for loss to follow-up.

Anderegg N, Johnson LF, Zaniewski E, Althoff KN, Balestre E, Law M, Nash D, Shepherd BE, Yiannoutsos CT, Egger M; IeDEA, MeSH consortia.

AIDS. 2017 Apr;31 Suppl 1:S31-S40. doi: 10.1097/QAD.0000000000001321.


The relationship between intimate partner violence and HIV: A model-based evaluation.

Rigby SW, Johnson LF.

Infect Dis Model. 2017 Feb 16;2(1):71-89. doi: 10.1016/j.idm.2017.02.002. eCollection 2017 Feb.


Designing an optimal HIV programme for South Africa: Does the optimal package change when diminishing returns are considered?

Chiu C, Johnson LF, Jamieson L, Larson BA, Meyer-Rath G.

BMC Public Health. 2017 Jan 31;17(1):143. doi: 10.1186/s12889-017-4023-3.


A multicomponent quality improvement intervention to improve blood pressure and reduce racial disparities in rural primary care practices.

Cené CW, Halladay JR, Gizlice Z, Donahue KE, Cummings DM, Hinderliter A, Miller C, Johnson LF, Garcia B, Tillman J, Little EP, Rachide MR, Keyserling TC, Ammerman A, Zhou H, Wu JR, DeWalt D.

J Clin Hypertens (Greenwich). 2017 Apr;19(4):351-360. doi: 10.1111/jch.12944. Epub 2016 Nov 25.


Life expectancy trends in adults on antiretroviral treatment in South Africa.

Johnson LF, Keiser O, Fox MP, Tanser F, Cornell M, Hoffmann CJ, Prozesky H, Boulle A, Davies MA; International Epidemiologic Databases to Evaluate AIDS Southern Africa (IeDEA-SA) Collaboration.

AIDS. 2016 Oct 23;30(16):2545-2550.


Prospects for HIV control in South Africa: a model-based analysis.

Johnson LF, Chiu C, Myer L, Davies MA, Dorrington RE, Bekker LG, Boulle A, Meyer-Rath G.

Glob Health Action. 2016 Jun 8;9:30314. doi: 10.3402/gha.v9.30314. eCollection 2016.


A Comparison of Two Mathematical Modeling Frameworks for Evaluating Sexually Transmitted Infection Epidemiology.

Johnson LF, Geffen N.

Sex Transm Dis. 2016 Mar;43(3):139-46. doi: 10.1097/OLQ.0000000000000412.


A comparison of death recording by health centres and civil registration in South Africans receiving antiretroviral treatment.

Johnson LF, Dorrington RE, Laubscher R, Hoffmann CJ, Wood R, Fox MP, Cornell M, Schomaker M, Prozesky H, Tanser F, Davies MA, Boulle A; International Epidemiologic Databases to Evaluate AIDS Southern Africa (IeDEA-SA) Collaboration.

J Int AIDS Soc. 2015 Dec 16;18:20628. doi: 10.7448/IAS.18.1.20628. eCollection 2015.


Age in antiretroviral therapy programmes in South Africa: a retrospective, multicentre, observational cohort study.

Cornell M, Johnson LF, Schomaker M, Tanser F, Maskew M, Wood R, Prozesky H, Giddy J, Stinson K, Egger M, Boulle A, Myer L; International Epidemiologic Databases to Evaluate AIDS-Southern Africa Collaboration.

Lancet HIV. 2015 Sep;2(9):e368-75. doi: 10.1016/S2352-3018(15)00113-7. Epub 2015 Aug 4.


Assessment of epidemic projections using recent HIV survey data in South Africa: a validation analysis of ten mathematical models of HIV epidemiology in the antiretroviral therapy era.

Eaton JW, Bacaër N, Bershteyn A, Cambiano V, Cori A, Dorrington RE, Fraser C, Gopalappa C, Hontelez JA, Johnson LF, Klein DJ, Phillips AN, Pretorius C, Stover J, Rehle TM, Hallett TB.

Lancet Glob Health. 2015 Oct;3(10):e598-608. doi: 10.1016/S2214-109X(15)00080-7.


Simultaneous Treatment of Missing Data and Measurement Error in HIV Research Using Multiple Overimputation.

Schomaker M, Hogger S, Johnson LF, Hoffmann CJ, Bärnighausen T, Heumann C.

Epidemiology. 2015 Sep;26(5):628-36. doi: 10.1097/EDE.0000000000000334.


Rates of HIV testing and diagnosis in South Africa: successes and challenges.

Johnson LF, Rehle TM, Jooste S, Bekker LG.

AIDS. 2015 Jul 17;29(11):1401-9. doi: 10.1097/QAD.0000000000000721.


Estimating trends in life expectancy in HIV-positive individuals.

Egger M, Johnson LF.

Lancet Glob Health. 2015 Mar;3(3):e122-3. doi: 10.1016/S2214-109X(14)70383-3. No abstract available.


Do increasing rates of loss to follow-up in antiretroviral treatment programs imply deteriorating patient retention?

Johnson LF, Estill J, Keiser O, Cornell M, Moolla H, Schomaker M, Grimsrud A, Davies MA, Boulle A.

Am J Epidemiol. 2014 Dec 15;180(12):1208-12. doi: 10.1093/aje/kwu295. Epub 2014 Nov 15.


A mathematical model evaluating the timing of early diagnostic testing in HIV-exposed infants in South Africa.

Lilian RR, Johnson LF, Moolla H, Sherman GG.

J Acquir Immune Defic Syndr. 2014 Nov 1;67(3):341-8. doi: 10.1097/QAI.0000000000000307.


Measuring unexplained variation in acute hospital use by patients enrolled with northern New Zealand general practices.

Sandiford P, Zhou L, Salvetto M, Johnson LF.

J Prim Health Care. 2014 Jun 1;6(2):93-100.


Increased alpha-9 human papillomavirus species viral load in human immunodeficiency virus positive women.

Mbulawa ZZ, Johnson LF, Marais DJ, Gustavsson I, Moodley JR, Coetzee D, Gyllensten U, Williamson AL.

BMC Infect Dis. 2014 Jan 31;14:51. doi: 10.1186/1471-2334-14-51.


Tracing of patients lost to follow-up and HIV transmission: mathematical modeling study based on 2 large ART programs in Malawi.

Estill J, Tweya H, Egger M, Wandeler G, Feldacker C, Johnson LF, Blaser N, Vizcaya LS, Phiri S, Keiser O.

J Acquir Immune Defic Syndr. 2014 Apr 15;65(5):e179-86. doi: 10.1097/QAI.0000000000000075.


Risk factors for oral human papillomavirus in heterosexual couples in an African setting.

Mbulawa ZZ, Johnson LF, Marais DJ, Coetzee D, Williamson AL.

J Infect. 2014 Feb;68(2):185-9. doi: 10.1016/j.jinf.2013.10.012. Epub 2013 Nov 1.


South African child deaths 1990-2011: have HIV services reversed the trend enough to meet Millennium Development Goal 4?

Kerber KJ, Lawn JE, Johnson LF, Mahy M, Dorrington RE, Phillips H, Bradshaw D, Nannan N, Msemburi W, Oestergaard MZ, Walker NP, Sanders D, Jackson D.

AIDS. 2013 Oct 23;27(16):2637-48. doi: 10.1097/01.aids.0000432987.53271.40.


Life expectancies of South African adults starting antiretroviral treatment: collaborative analysis of cohort studies.

Johnson LF, Mossong J, Dorrington RE, Schomaker M, Hoffmann CJ, Keiser O, Fox MP, Wood R, Prozesky H, Giddy J, Garone DB, Cornell M, Egger M, Boulle A; International Epidemiologic Databases to Evaluate AIDS Southern Africa Collaboration.

PLoS Med. 2013;10(4):e1001418. doi: 10.1371/journal.pmed.1001418. Epub 2013 Apr 9.


Community viral load and CD4 count distribution among people living with HIV in a South African Township: implications for treatment as prevention.

Kranzer K, Lawn SD, Johnson LF, Bekker LG, Wood R.

J Acquir Immune Defic Syndr. 2013 Aug 1;63(4):498-505. doi: 10.1097/QAI.0b013e318293ae48.


The impact of human immunodeficiency virus on human papillomavirus transmission in heterosexually active couples.

Mbulawa ZZ, Johnson LF, Marais DJ, Coetzee D, Williamson AL.

J Infect. 2013 Jul;67(1):51-8. doi: 10.1016/j.jinf.2013.03.009. Epub 2013 Apr 6.


Monitoring of antiretroviral therapy and mortality in HIV programmes in Malawi, South Africa and Zambia: mathematical modelling study.

Estill J, Egger M, Johnson LF, Gsponer T, Wandeler G, Davies MA, Boulle A, Wood R, Garone D, Stringer JS, Hallett TB, Keiser O; IeDEA Southern Africa Collaboration.

PLoS One. 2013;8(2):e57611. doi: 10.1371/journal.pone.0057611. Epub 2013 Feb 28.


Estimated mortality of adult HIV-infected patients starting treatment with combination antiretroviral therapy.

Yiannoutsos CT, Johnson LF, Boulle A, Musick BS, Gsponer T, Balestre E, Law M, Shepherd BE, Egger M; International Epidemiologic Databases to Evaluate AIDS (IeDEA) Collaboration.

Sex Transm Infect. 2012 Dec;88 Suppl 2:i33-43. doi: 10.1136/sextrans-2012-050658.


Gender differences in survival among adult patients starting antiretroviral therapy in South Africa: a multicentre cohort study.

Cornell M, Schomaker M, Garone DB, Giddy J, Hoffmann CJ, Lessells R, Maskew M, Prozesky H, Wood R, Johnson LF, Egger M, Boulle A, Myer L; International Epidemiologic Databases to Evaluate AIDS Southern Africa Collaboration.

PLoS Med. 2012;9(9):e1001304. Epub 2012 Sep 4.


HIV treatment as prevention: systematic comparison of mathematical models of the potential impact of antiretroviral therapy on HIV incidence in South Africa.

Eaton JW, Johnson LF, Salomon JA, Bärnighausen T, Bendavid E, Bershteyn A, Bloom DE, Cambiano V, Fraser C, Hontelez JA, Humair S, Klein DJ, Long EF, Phillips AN, Pretorius C, Stover J, Wenger EA, Williams BG, Hallett TB.

PLoS Med. 2012;9(7):e1001245. doi: 10.1371/journal.pmed.1001245. Epub 2012 Jul 10.


Impact of human immunodeficiency virus on the natural history of human papillomavirus genital infection in South African men and women.

Mbulawa ZZ, Marais DJ, Johnson LF, Coetzee D, Williamson AL.

J Infect Dis. 2012 Jul 1;206(1):15-27. doi: 10.1093/infdis/jis299. Epub 2012 Apr 19.


The effect of changes in condom usage and antiretroviral treatment coverage on human immunodeficiency virus incidence in South Africa: a model-based analysis.

Johnson LF, Hallett TB, Rehle TM, Dorrington RE.

J R Soc Interface. 2012 Jul 7;9(72):1544-54. doi: 10.1098/rsif.2011.0826. Epub 2012 Jan 18.


Successful closure of pharyngo-cutaneous and phayryngo-tracheal fistulas using removable hypopharyngeal stent after laryngectomy for laryngeal carcinoma.

Eloubeidi MA, Morgan DE, Carroll WR, Johnson LF.

Saudi J Gastroenterol. 2012 Jan-Feb;18(1):62-7. doi: 10.4103/1319-3767.91730.


The contribution of maternal HIV seroconversion during late pregnancy and breastfeeding to mother-to-child transmission of HIV.

Johnson LF, Stinson K, Newell ML, Bland RM, Moultrie H, Davies MA, Rehle TM, Dorrington RE, Sherman GG.

J Acquir Immune Defic Syndr. 2012 Apr 1;59(4):417-25. doi: 10.1097/QAI.0b013e3182432f27.


The effect of early initiation of antiretroviral treatment in infants on pediatric AIDS mortality in South Africa: a model-based analysis.

Johnson LF, Davies MA, Moultrie H, Sherman GG, Bland RM, Rehle TM, Dorrington RE, Newell ML.

Pediatr Infect Dis J. 2012 May;31(5):474-80. doi: 10.1097/INF.0b013e3182456ba2.


The role of sexually transmitted infections in the evolution of the South African HIV epidemic.

Johnson LF, Dorrington RE, Bradshaw D, Coetzee DJ.

Trop Med Int Health. 2012 Feb;17(2):161-8. doi: 10.1111/j.1365-3156.2011.02906.x. Epub 2011 Oct 31.


Barrett's esophagus: endoscopic diagnosis.

Ishimura N, Amano Y, Appelman HD, Penagini R, Tenca A, Falk GW, Wong RK, Gerson LB, Ramirez FC, Horwhat JD, Lightdale CJ, DeVault KR, Freschi G, Taddei A, Bechi P, Ringressi MN, Castiglione F, Rossi Degl'Innocenti D, Wang HH, Huang Q, Bellizzi AM, Lisovsky M, Srivastava A, Riddell RH, Johnson LF, Saunders MD, Chuttani R.

Ann N Y Acad Sci. 2011 Sep;1232:53-75. doi: 10.1111/j.1749-6632.2011.06045.x. Review.


Generation of chordoma cell line JHC7 and the identification of Brachyury as a novel molecular target.

Hsu W, Mohyeldin A, Shah SR, ap Rhys CM, Johnson LF, Sedora-Roman NI, Kosztowski TA, Awad OA, McCarthy EF, Loeb DM, Wolinsky JP, Gokaslan ZL, Quiñones-Hinojosa A.

J Neurosurg. 2011 Oct;115(4):760-9. doi: 10.3171/2011.5.JNS11185. Epub 2011 Jun 24.


A review of mathematical models of HIV/AIDS interventions and their implications for policy.

Johnson LF, White PJ.

Sex Transm Infect. 2011 Dec;87(7):629-34. doi: 10.1136/sti.2010.045500. Epub 2011 Jun 16. Review.


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