In order to describe the incidence of Guillain-Barre syndrome (GBS) in
Stockholm County (SC) and hospital use by GBS patients, we conducted
a retrospective epidemiological study on GBS covering 1973-1991, using
the Hospital Inpatient Register in SC. There were 556 patients, bona
fide residents in the county during the study period, discharged from
hospitals with GBS diagnosis. The mean annual incidence, age-adjusted
to the European population, was 1.84 (2.15 for males and 1.57 for fema
les) per 100,000 population. The incidence increased with age and show
ed a bimodal distribution with peaks in the 10-29 and 70-79 age-groups
. Annual incidence rates were highest in 1978 and 1983. Neither hetero
geneity of annual or monthly rates nor linear trends during the period
were found to be significant, except in 1978 for patients below 40 ye
ars of age, RR 1.72 (95% CI 1.08-2.71) and in 1983 for patients at age
s 40 years and over, RR 1.48 (95% CI 1.02-2.16), when compared with GB
S incidences in the same age-groups during the remaining study period.
The mean +/-SD duration of hospital stay, including long-term care or
rehabilitation institutions, for GBS patients, was 86 +/- 210 days, w
ith considerably longer duration for the elderly. The rate of hospital
use by GBS patients was 162 days per 100,000 inhabitants per year. In
accordance with results of prior studies in South-West Stockholm and
described GBS epidemics in Sweden, this study supports that an etiolog
ically different subgroup of GBS exists at ages below 40 years, and th
at relevant but small time-space variations, such as the reported zime
ldine epidemic in 1983, resist detection by hospital data analysis of
pooled GBS cases. Efficient epidemiological surveillance of GBS may re
quire targeted development of clinicoepidemiological tools.