Evaluation of WHO criteria to determine degree of dehydration in children with acute diarrhea
Abstract
Objective To evaluate the diagnostic accuracy and agreementbetween the 1980 and 1990 WHO criteria for determining the de-
gree of dehydration in children with acute diarrhea.
Methods This prospective study was conducted in two hospitals
from October 2002 to February 2003. Clinical signs of dehydration
all patients were recorded. The degree of dehydration based on
the 1980 and 1990 WHO criteria was determined and compared
with fluid deficit measured by the difference of body weight on ad-
mission and on discharge. Chi-square test and kappa value analy-
ses were performed. Sensitivity, specificity, predictive values, and
accuracy of each WHO criteria were assessed. The prevalence of
dehydration was also determined.
Results Sixty-five patients, comprising 40 boys and 25 girls, were
studied. There was a significant difference between the two WHO
criteria in differentiating between dehydration and non-dehydra-
tion (P<0.05). Based on the 1980 WHO criteria the prevalence of
dehydration was 62.2%. Its sensitivity, specificity, and accuracy in
diagnosing dehydration were 100.0%, 55.5%, and 86.2%, respec-
tively. Based on the 1990 WHO criteria, the prevalence of dehy-
dration was 60.0%. Its sensitivity, specificity, and accuracy in diag-
nosing dehydration were 94.9%, 46.1%, and 75.4%, respectively.
There was also a significant difference between both criteria in
determining severe dehydration (P<0.05). Based on the 1980 cri-
teria, the prevalence of severe dehydration was 15.4%. Its sensi-
tivity, specificity, and accuracy in diagnosing severe dehydration
were 30.0%, 94.5%, and 84.6%, respectively. Based on the 1990
criteria, these results were 40.0%, 94.5%, and 86.2%, respectively.
The prevalence was 15.4%. Kappa value comparing the two WHO
criteria was 0.852 in diagnosing dehydration and 0.915 in diag-
nosing severe dehydration. There was no significant difference
between the two criteria in their sensitivity and specificity (P>0.05).
Conclusion Both WHO criteria can be applied to determine de-
hydration in patients with acute diarrhea, although we feel that the
1990 criteria is simpler
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Accepted 2016-10-05
Published 2016-10-10