Skip directly to site content Skip directly to page options Skip directly to A-Z link Skip directly to A-Z link Skip directly to A-Z link
Volume 8, Number 6—June 2002
Research

Defining and Detecting Malaria Epidemics in the Highlands of Western Kenya

Simon I. Hay*†Comments to Author , Milka Simba†, Millie Busolo‡, Abdisalan M. Noor†, Helen L. Guyatt*†, Sam A. Ochola‡, and Robert W. Snow*†‡
Author affiliations: *University of Oxford, Oxford, United Kingdom; †Kenya Medical Research Institute/Wellcome Trust Collaborative Programme, Nairobi, Kenya; ‡Ministry of Health, Nairobi, Kenya;

Main Article

Table 2

Comparison of total number of epidemic months detected by the World Health Organization (WHO), Cullen, and cumulative-sum techniques for three study hospitals, western Kenyaa

Technique Method Kilgoris
1998-1999
N=180 (%) Kisii
1992-2000
N=108 (%) Tabaka
1986-2000
N=180 (%)
WHO Not transformed 75 (41.7) 34 (31.5) 77 (42.8)
Cullen Not transformed, SCI 26 (14.4) 11 (10.2) 23 (12.8)
Not transformed, KCI 47 (26.1) 16 (14.8) 45 (25.0)
Log10 transformed, SCI 13 (7.2) 4 (3.7) 12 (6.7)
Log10 transformed, KCI 39 (21.7) 15 (13.9) 36 (20.0)
C-sum Not transformed, SCI 17 (9.4) 6 (5.6) 19 (10.6)
Not transformed, KCI 55 (30.6) 27 (25.0) 64 (35.6)
Log10 transformed, SCI 6 (3.3) 3 (2.8) 8 (4.4)
Log10 transformed, KCI 66 (36.7) 30 (27.8) 76 (42.2)

aFigures are number of months defined as epidemic in the monitoring period. Brackets are the percentage of the total months defined as epidemic.

Main Article

Page created: July 16, 2010
Page updated: July 16, 2010
Page reviewed: July 16, 2010
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
file_external