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Figure 1. Spider plots of adult, child, and total admissions and
time series of adult:child ratio for three study hospitals in Kenya. Spider
plots of malaria admissions in Kilgoris (A), Kisii (C), and Tabaka (E).
The data are monthly averages for the 1980–1999, 1987–2000, and 1981–2000
time periods, respectively. Adult cases (>15 years of age) are
shown in blue, child cases (<15 years) are shown in red, and total
cases in black. Time series plots of the monthly adult:child ratio data
are also shown for Kilgoris (B), Kisii (D), and Tabaka (F) as the continuous
black line. The dashed line represents the value of 1 where adult and
child admissions are equal, as is to be expected in true epidemic conditions
(39–41). The bold line is a 25-point (month)
moving average of the adult:child ratio.
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