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Volume 9, Number 8—August 2003

Dispatch

Fluid Intake and Decreased Risk for Hospitalization for Dengue Fever, Nicaragua

Eva Harris*Comments to Author , Leonel Pérez†, Christina R. Phares*, Maria de los Angeles Pérez‡, Wendy Idiaquez‡, Julio Rocha§, Ricardo Cuadra§, Emelina Hernandez¶, Luisa Amanda Campos†, Alcides Gonzalez†, Juan Jose Amador†, and Angel Balmaseda†
Author affiliations: *University of California, Berkeley, California, USA; †Ministerio de Salud, Managua, Nicaragua; ‡Hospital Infantil Manuel de Jesús Rivera, Managua, Nicaragua; §Hospital Escuela Oscar Danilo Rosales Argüello, Leon, Nicaragua; ¶Centro de Salud Francisco Buitrago, Managua, Nicaragua

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Table 1

Characteristics of all hospitalized and unhospitalized dengue patientsa

Data Hospitalized
cases
Unhospitalized
cases
Total
n Mean (sd) or
% of group n Mean (sd) or
% of group n Mean (sd) or
% of group
Demographic data






Age (y)
478
9.4 (8.9)
834
18.7 (15.5)
1,312
15.3 (14.2)
Male
229
47.8%
328
39.2%
557
42.3%
Distance (km) to health facility
464
10.0 (25.0)
831
2.7 (6.1)
1,295
5.3 (16.1)
Disease classificationa






Classic DF
113
23.5%
706
84.4%
819
62.1%
DFHem
240
50.0%
129
15.4%
369
28.0%
DHF
67
14.0%
0
0%
67
5.1%
DSS
16
3.3%
1
0.1%
17
1.3%
DSAS
30
6.3%
0
0%
30
2.3%
No classification
14
2.9%
1
0.1%
15
1.1%
Duration of hospitalization (days)b






Classic DF
52
5.7 (1.7)




DFHem
95
5.1 (1.7)




DHF
56
6.1c (1.5)




DSS
15
6.9c,d (1.9)




DSAS
28
6.1c (1.8)




No classification
11
6.2 (1.9)




Clinical data at presentation






No. of glasses of fluid ingested during previous 24 he
331
2.9 (2.3)
757
5.6 (3.9)
1,088
4.8 (3.7)
Thrombocytopenia
289
60.2%
58
6.9%
347
26.4%
Anorexia
239
50.9%
422
53.3%
661
52.4%
Stomach pain
271
58.4%
404
51.5%
675
54.4%
Days since onset of symptoms 476 5.5 (5.6) 826 5.2 (5.7) 1,302 5.3 (5.7)

aDF, dengue fever; DFHem, DF with hemorrhagic manifestations; DHF, dengue hemorrhagic fever; DSS, dengue shock syndrome; DSAS, dengue with signs associated with shock.
bInformation on the duration of hospitalization was available from 52 (46%) of hospitalized classic DF patients; 95 (40%) of hospitalized DFHem patients; 56 (84%) of hospitalized DHF patients; 15 (94%) of hospitalized DSS patients; and 28 (93%) of hospitalized DSAS patients. Outliers (>12 days) were removed before analysis.
cThe mean duration of hospitalization was significantly longer for DHF cases, DSS cases, and DSAS cases as compared with duration for DFHem cases (p<0.05 for each, Student t test).
dThe mean duration of hospitalization was significantly longer for DSS cases compared with duration for classic DF cases (p<0.05, Student t test).
eThe average glass contains approximately 8 oz.

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