Use of state hospital discharge data to assess the morbidity from rotavirus diarrhea and to monitor the impact of a rotavirus immunization program: Apilot study in Connecticut
Ud. Parashar et al., Use of state hospital discharge data to assess the morbidity from rotavirus diarrhea and to monitor the impact of a rotavirus immunization program: Apilot study in Connecticut, PEDIATRICS, 104(3), 1999, pp. 489-494
Objectives. Now that rotavirus vaccines have been licensed and recommended
for routine immunization of US infants, there is an urgent need for data to
assess the morbidity from rotavirus diarrhea and to monitor the impact of
a rotavirus immunization program. In a pilot study, we have assessed the us
efulness of state hospital discharge data on diarrhea in children to provid
e this information by examining data from Connecticut.
Design. Retrospective analysis of discharge records from acute care, nongov
ernmental hospitals in Connecticut.
Patients. Children 1 month through 4 years of age with a diarrhea-associate
d diagnosis listed on the discharge record.
Setting. Connecticut, 1987 through 1996.
Results. During the 10-year study period, a total of 11 324 diarrhea-associ
ated hospitalizations (49.4 hospitalizations per 10 000 children) were repo
rted. Diarrhea-associated hospitalizations peaked during February through A
pril, especially among children 4 to 35 months of age. The seasonality and
age distribution of diarrhea-associated hospitalizations of presumed noninf
ectious and viral etiologies resembled those of rotavirus-associated hospit
alizations. During 1993 to 1996, rotavirus was coded for 10.4% of diarrhea-
associated hospitalizations increasing from 8.6% in 1993 to 14.7% in 1996.
The unadjusted median cost of a diarrhea-associated hospitalization during
1987 to 1996 and 1993 to 1996 was $1941 and $2428, respectively.
Conclusions. Diarrhea causes substantial morbidity in children from Connect
icut. The winter seasonal peak of diarrhea-associated hospitalizations in c
hildren 4 to 35 months of age coinciding with the peak of rotavirus-specifi
c hospitalizations suggests that rotavirus is an important contributor to t
he overall morbidity. Although our findings suggest incomplete coding of ro
tavirus cases, state hospital discharge data should provide sensitive and t
imely information to monitor the impact of a rotavirus immunization program
in Connecticut.