1982 …2019

Research output per year

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Article
2011

Plausible estimates of stillbirth rates

Walker, N., Apr 16 2011, In : The Lancet. 377, 9774, p. 1292-1294 3 p.

Research output: Contribution to journalArticle

Scaling up diarrhea prevention and treatment interventions: a Lives Saved Tool analysis.

Fischer Walker, C. L., Friberg, I. K., Binkin, N., Young, M., Walker, N., Fontaine, O., Weissman, E., Gupta, A. & Black, R. E., Mar 2011, In : PLoS Medicine. 8, 3

Research output: Contribution to journalArticle

Stillbirths: How can health systems deliver for mothers and babies?

Pattinson, R., Kerber, K., Buchmann, E., Friberg, I. K., Belizan, M., Lansky, S., Weissman, E., Mathai, M., Rudan, I., Walker, N. & Lawn, J. E., May 7 2011, In : The Lancet. 377, 9777, p. 1610-1623 14 p.

Research output: Contribution to journalArticle

2010

Comparing modelled predictions of neonatal mortality impacts using list with observed results of community-based intervention trials in South Asia

Friberg, I. K., Bhutta, Z. A., Darmstadt, G. L., Bang, A., Cousens, S., Baqui, A., Kumar, V., Walker, N. & Lawn, J. E., Apr 1 2010, In : International Journal of Epidemiology. 39, SUPPL. 1

Research output: Contribution to journalArticle

Fertility of HIV-infected women: insights from Demographic and Health Surveys.

Chen, W. J. & Walker, N., Dec 2010, In : Sexually transmitted infections. 86 Suppl 2, p. ii22-27

Research output: Contribution to journalArticle

LiST as a catalyst in program planning: Experiences from Burkina Faso, Ghana and Malawi

Bryce, J., Friberg, I. K., Kraushaar, D., Nsona, H., Afenyadu, G. Y., Nare, N., Kyei-Faried, S. & Walker, N., Apr 1 2010, In : International Journal of Epidemiology. 39, SUPPL. 1

Research output: Contribution to journalArticle

Standards for CHERG reviews of intervention effects on child survival

Walker, N., Fischer-Walker, C., Bryce, J., Bahl, R. & Cousens, S., Apr 1 2010, In : International journal of epidemiology. 39, SUPPL. 1, p. i21-i31

Research output: Contribution to journalArticle

Sub-Saharan Africa's mothers, newborns, and children: How many lives could be saved with targeted health interventions?

Friberg, I. K., Kinney, M. V., Lawn, J. E., Kerber, K. J., Odubanjo, M. O., Bergh, A. M., Walker, N., Weissman, E., Chopra, M. & Black, R. E., Jun 1 2010, In : PLoS medicine. 7, 6

Research output: Contribution to journalArticle

2008

Discrepancies between UN models and DHS survey estimates of maternal orphan prevalence: Insights from analyses of survey data from Zimbabwe

Robertson, L., Gregson, S., Madanhire, C., Walker, N., Mushati, P., Garnett, G. & Nyamukapa, C., Aug 2008, In : Sexually Transmitted Infections. 84, SUPPL. 1

Research output: Contribution to journalArticle

Estimates of HIV burden in emergencies

Lowicki-Zucca, M., Spiegel, P., Kelly, S., Dehne, K. L., Walker, N. & Ghys, P. D., Aug 2008, In : Sexually Transmitted Infections. 84, SUPPL. 1

Research output: Contribution to journalArticle

Improved data, methods and tools for the 2007 HIV and AIDS estimates and projections

Ghys, P. D., Walker, N., McFarland, W., Miller, R. & Garnett, G. P., Aug 2008, In : Sexually Transmitted Infections. 84, SUPPL. 1

Research output: Contribution to journalArticle

Interpreting declines in HIV prevalence: Impact of spatial aggregation and migration on expected declines in prevalence

Walker, N., Hallett, T. B., White, P. J. & Garnett, G. P., Oct 2008, In : Sexually Transmitted Infections. 84, SUPPL. 2

Research output: Contribution to journalArticle

Saving newborn lives in Asia and Africa: Cost and impact of phased scale-up of interventions within the continuum of care

Darmstadt, G. L., Walker, N., Lawn, J. E., Bhutta, Z. A., Haws, R. A. & Cousens, S., Mar 2008, In : Health Policy and Planning. 23, 2, p. 101-117 17 p.

Research output: Contribution to journalArticle

2007

Estimates of maternal mortality worldwide between 1990 and 2005: an assessment of available data

Hill, K., Thomas, K., AbouZahr, C., Walker, N., Say, L., Inoue, M. & Suzuki, E., Oct 13 2007, In : The Lancet. 370, 9595, p. 1311-1319 9 p.

Research output: Contribution to journalArticle

Global Burden of Disease 2005: call for collaborators

Murray, C. JL., Lopez, A. D., Black, R. E., Mathers, C. D., Shibuya, K., Ezzati, M., Salomon, J. A., Michaud, C. M., Walker, N. & Vos, T., Jul 14 2007, In : The Lancet. 370, 9582, p. 109-110 2 p.

Research output: Contribution to journalArticle

Interpreting health statistics for policymaking: the story behind the headlines

Walker, N., Bryce, J. & Black, R. E., Mar 17 2007, In : The Lancet. 369, 9565, p. 956-963 8 p.

Research output: Contribution to journalArticle

National response to orphans and other vulnerable children in sub-Saharan Africa: The OVC policy and planning effort index, 2004

Monasch, R., Stover, J., Loudon, M., Kabira, D. & Walker, N., Apr 1 2007, In : Vulnerable Children and Youth Studies. 2, 1, p. 40-59 20 p.

Research output: Contribution to journalArticle

Resource needs to support orphans and vulnerable children in sub-Saharan Africa

Stover, J., Bollinger, L., Walker, N. & Monasch, R., Jan 1 2007, In : Health policy and planning. 22, 1, p. 21-27 7 p.

Research output: Contribution to journalArticle

2006

Declines in HIV prevalence can be associated with changing sexual behaviour in Uganda, urban Kenya, Zimbabwe, and urban Haiti

Hallett, T. B., Aberle-Grasse, J., Bello, G., Boulos, L. M., Cayemittes, M. P. A., Cheluget, B., Chipeta, J., Dorrington, R., Dube, S., Ekra, A. K., Garcia-Calleja, J. M., Garnett, G. P., Greby, S., Gregson, S., Grove, J. T., Hader, S., Hanson, J., Hladik, W., Ismail, S., Kassim, S. & 9 others, Kirungi, W., Kouassi, L., Mahomva, A., Marum, L., Maurice, C., Nolan, M., Rehle, T., Stover, J. & Walker, N., Apr 1 2006, In : Sexually transmitted infections. 82, SUPPL. 1, p. i1-i8

Research output: Contribution to journalArticle

Improved plausibility bounds about the 2005 HIV and AIDS estimates

Morgan, M., Walker, N., Gouws, E., Stanecki, K. A. & Stover, J., Jun 2006, In : Sexually Transmitted Infections. 82, SUPPL. III

Research output: Contribution to journalArticle

Improving analysis of the size and dynamics of AIDS epidemics

Ghys, P. D., Walker, N. & Garnett, G. P., Jun 2006, In : Sexually Transmitted Infections. 82, SUPPL. III

Research output: Contribution to journalArticle

Monitoring the scale-up of antiretroviral therapy programmes: Methods to estimate coverage

Boerma, J. T., Stanecki, K. A., Newell, M. L., Luo, C., Beusenberg, M., Garnett, G. P., Little, K., Calleja, J. G., Crowley, S., Jim, Y. K., Zaniewski, E., Walker, N., Stover, J. & Ghys, P. D., Feb 2006, In : Bulletin of the World Health Organization. 84, 2, p. 145-150 6 p.

Research output: Contribution to journalArticle

Projecting the demographic impact of AIDS and the number of people in need of treatment: Updates to the Spectrum projection package

Stover, J., Walker, N., Grassly, N. C. & Marston, M., Jun 1 2006, In : Sexually transmitted infections. 82, SUPPL. III, p. iii45-iii50

Research output: Contribution to journalArticle

The global impact of scaling up HIV/AIDS prevention programs in low- and middle-income countries

Stover, J., Bertozzi, S., Gutierrez, J. P., Walker, N., Stanecki, K. A., Greener, R., Gouws, E., Hankins, C., Garnett, G. P., Salomon, J. A., Boerma, J. T., De Lay, P. & Ghys, P. D., Mar 10 2006, In : Science. 311, 5766, p. 1474-1476 3 p.

Research output: Contribution to journalArticle

Tracking progress towards the Millennium Development Goals: Reaching consensus on child mortality levels and trends

Hill, K., Croft, T., Jones, G., Loaiza, E., Hancioglu, A., Walker, N., Bakka, E., Wardlaw, T., Wilmoth, J., Pelletier, F., Sawyer, C., Buettner, T., Suzuki, E., Bos, E., Inoue, M., Shibuya, K. & Boerma, T., Mar 2006, In : Bulletin of the World Health Organization. 84, 3, p. 225-232 8 p.

Research output: Contribution to journalArticle

2005

Can the world afford to save the lives of 6 million children each year?

Bryce, J., Black, R. E., Walker, N., Bhutta, Z. A., Lawn, J. E. & Steketee, R. W., Jun 25 2005, In : The Lancet. 365, 9478, p. 2193-2200 8 p.

Research output: Contribution to journalArticle

Evidence-based, cost-effective interventions: How many newborn babies can we save?

Darmstadt, G. L., Bhutta, Z. A., Cousens, S., Adam, T., Walker, N. & De Bernis, L., Mar 12 2005, In : The Lancet. 365, 9463, p. 977-988 12 p.

Research output: Contribution to journalArticle

Integrating HIV prevention and treatment: From slogans to impact

Salomon, J. A., Hogan, D. R., Stover, J., Stanecki, K. A., Walker, N., Ghys, P. D. & Schwartländer, B., Apr 7 2005, In : PLoS medicine. 2, p. 50-56 7 p.

Research output: Contribution to journalArticle

2004

A global analysis of trends in the quality of HIV sero-surveillance

Garcia-Calleja, J. M., Zaniewski, E., Ghys, P. D., Stanecki, K. & Walker, N., Aug 2004, In : Sexually Transmitted Infections. 80, SUPPL. 1

Research output: Contribution to journalArticle

Comparison of household-survey estimates with projections of mortality and orphan numbers in sub-Saharan Africa in the area of HIV/AIDS

Grassly, N. C., Lewis, J. J. C., Mahy, M., Walker, N. & Timaæus, I. M., Jul 2004, In : Population Studies. 58, 2, p. 207-217 11 p.

Research output: Contribution to journalArticle

Distribution of major health risks: Findings from the global burden of disease study

Comparative Risk Assessment Collaborating Group, Jan 1 2004, In : PLoS Medicine. 1, 1, p. 44-55 12 p., e27.

Research output: Contribution to journalArticle

Estimating resource needs for HIV/AIDS health care services in low-income and middle-income countries

Bertozzi, S., Gutierrez, J. P., Opuni, M., Walker, N. & Schwartländer, B., Aug 2004, In : Health Policy. 69, 2, p. 189-200 12 p.

Research output: Contribution to journalArticle

Estimating the global burden of HIV/AIDS: What do we really know about the HIV pandemic?

Walker, N., Grassly, N. C., Garnett, G. P., Stanecki, K. A. & Ghys, P. D., Jun 26 2004, In : The Lancet. 363, 9427, p. 2180-2185 6 p.

Research output: Contribution to journalArticle

Testing the accuracy of demographic estimates in countries with generalized epidemics

Stover, J., Ghys, P. D. & Walker, N., Jan 1 2004, In : AIDS. 18, SUPPL. 2, p. S67-S73

Research output: Contribution to journalArticle

The workbook approach to making estimates and projecting future scenarios of HIV/AIDS in countries with low level and concentrated epidemics

Walker, N., Stover, J., Stanecki, K., Zaniewski, A. E., Grassly, N. C., Garcia-Calleja, J. M. & Ghys, P. D., Aug 2004, In : Sexually Transmitted Infections. 80, SUPPL. 1

Research output: Contribution to journalArticle

Uncertainty in estimates of HIV/AIDS: The estimation and application of plausibility bounds

Grassly, N. C., Morgan, M., Walker, N., Garnett, G., Stanecki, K. A., Stover, J., Brown, T. & Ghys, P. D., Aug 2004, In : Sexually Transmitted Infections. 80, SUPPL. 1

Research output: Contribution to journalArticle

2003

Back to basics in HIV prevention: Focus on exposure

Pisani, E., Garnett, G. P., Brown, T., Stover, J., Grassly, N. C., Hankins, C., Walker, N. & Ghys, P. D., Jun 21 2003, In : BMJ (Online). 326, 7403, p. 1384-1387 4 p.

Research output: Contribution to journalArticle

Estimation of "needs" and "probable uptake" for HIV/AIDS preventive vaccines based on possible policies and likely acceptance (a WHO/UNAIDS/IAVI study)

Esparza, J., Chang, M. L., Widdus, R., Madrid, Y., Walker, N. & Ghys, P. D., May 16 2003, In : Vaccine. 21, 17-18, p. 2032-2041 10 p.

Research output: Contribution to journalArticle

Growing in silence: selected regions and countries with expanding HIV/AIDS epidemics.

Ghys, P. D., Saidel, T., Vu, H. T., Savtchenko, I., Erasilova, I., Mashologu, Y. S., Indongo, R., Sikhosana, N. & Walker, N., 2003, In : AIDS. 17 Suppl 4

Research output: Contribution to journalArticle

HIV surveillance: A global perspective

Pisani, E., Lazzari, S., Walker, N. & Schwartländer, B., Feb 2003, In : Journal of Acquired Immune Deficiency Syndromes. 32, SUPPL. 1

Research output: Contribution to journalArticle

Methods and procedures for estimating HIV/AIDS and its impact: The UNAIDS/WHO estimates for the end of 2001

Walker, N., Stanecki, K. A., Brown, T., Stover, J., Lazzari, S., Garcia-Calleja, J. M., Schwartländer, B. & Ghys, P. D., Oct 17 2003, In : AIDS. 17, 15, p. 2215-2225 11 p.

Research output: Contribution to journalArticle

The growing burden of tuberculosis: Global trends and interactions with the HIV epidemic

Corbett, E. L., Watt, C. J., Walker, N., Maher, D., Williams, B. G., Raviglione, M. C. & Dye, C., May 12 2003, In : Archives of Internal Medicine. 163, 9, p. 1009-1021 13 p.

Research output: Contribution to journalArticle

2002

AIDS in Africa.

Ghys, P. D., Walker, N. & Hankins, C., Nov 2 2002, In : The Lancet. 360, 9343

Research output: Contribution to journalArticle

AIDS in Africa [2] (multiple letters)

Gisselquist, D., Potterat, J. J., Epstein, P., Vachon, F., Minkin, S. F., Buvé, A., Clerici, M., Boasso, A., Rizzardini, G., Deshpande, A., Biasin, M., Konotey-Ahulu, F. I. D., Ghys, P. D., Walker, N., Hankins, C. & Parkhurst, J., Nov 2 2002, In : The Lancet. 360, 9343, p. 1422-1425 4 p.

Research output: Contribution to journalArticle

Can we reverse the HIV/AIDS pandemic with an expanded response?

Stover, J., Walker, N., Garnett, G. P., Salomon, J. A., Stanecki, K. A., Ghys, P. D., Grassly, N. C., Anderson, R. M. & Schwartländer, B., Jul 6 2002, In : Lancet. 360, 9326, p. 73-77 5 p.

Research output: Contribution to journalArticle

Estimated global distribution and regional spread of HIV-1 genetic subtypes in the year 2000

Osmanov, S., Pattou, C., Walker, N., Schwardländer, B., Esparza, J., Abimiku, A., Barre-Sinoussi, F., Biberfield, G., Birx, D., Bobkov, A., Von Briesen, H., Dietrich, U., Chappey, C., Galvao-Castro, B., Morgado, M., Tanuri, A., Goudsmit, J., Lukashov, L., Van der Groen, G., Heyndrickx, L. & 24 others, Janssen, W., Hahn, B., Gao, F., Hoelscher, M., Kaleebu, P., Sempala, S., Kalish, M., Korber, B., Lopez-Galindez, C., M'Boup, S., McCutchan, F., Mhalu, F., Lyamuya, E., Mullins, J., Najera, R., Nkengasong, J., Peeters, M., Delaporte, E., Salminen, M., Salomon, H., Samuel, N. M., Shao, Y., Wasi, C. & Williamson, C., Feb 1 2002, In : Journal of Acquired Immune Deficiency Syndromes. 29, 2, p. 184-190 7 p.

Research output: Contribution to journalArticle

Estimating HIV/AIDS prevalence in countries with low-level and concentrated epidemics: The example of Honduras

Ramón, J. S., Alvarenga, M., Walker, N., Garcia-Calleja, J. M. & Zacarias, F., Dec 1 2002, In : AIDS. 16, SUPPL. 3, p. S18-S22

Research output: Contribution to journalArticle

Improved methods and assumptions for estimation of the HIV/AIDS epidemic and its impact: Recommendations of the UNAIDS Reference Group on estimates, modelling and projections

Artzrouni, M., Brown, T., Feeney, G., Garnett, G., Ghys, P., Grassly, N., Lazzari, S., Schneider, D., Stanecki, K., Stover, J., Schwartländer, B., Walker, N., Way, P., Yan, P., Zaba, B., Zlotnik, H., Boerma, T., Brahmbhatt, H., Calleja, J. M., Chin, J. & 16 others, Coutinho, R., Dabis, F., De Cock, K., Fitzgerald, D., Garnett, G., Gray, R., Kitayaporn, D., Landmann Szwarcwald, C., Morgan, D., Peerpatanapokin, W., Rangsin, R., Reddy, D. K., De Vincenzi, I., Monasch, R., Peeranapatopokin, W. & Timæus, I., Jun 14 2002, In : AIDS. 16, 9, p. W1-W14

Research output: Contribution to journalArticle