The aim of the present study is to report actual information about the
clinical conditions of psychiatric inpatients in 31 psychiatric hospi
tals all over the country. The schedule used in this survey was partly
designed following the information gathered in the NKI Mental Health
Information System, including other relevant variables to facilitate o
perational and evaluative research. The survey was carried out by the
health personnel of each unit, following the instructions included in
a brief manual. All the inpatients from the psychiatric hospitals with
150 beds or less were included. For those units with more capacity, a
systematic random sample, including one of every five patients was us
ed. The final sample contained 4 539 inpatients. Sixty percent corresp
onded to male inpatients, most of them single, with schizophrenia and
alcohol and drug dependence as the most frequent diagnoses. In women,
the most frequent diagnoses were mental retardation and other chronic
organic psychosis. As a whole, 59 % of the patients were reported with
a chronic illness. Among the actual clinical problems, psychotic stat
es were the more frequently reported. Disabilities were reported in 65
% of the sample; 51 % presented a second one and 37 % three. Those ha
ving a severe disability were more predominat in the extreme aged grou
ps. Thirty six percent of the patients had been abandoned or rejected
by their families or did not have any relatives. Females were predomin
ant in this situation, associated with the more severe and incapacitat
ing disorders. Half of the population had the possibility of being dis
charged; the 40 % of patients without this possibility included those
with mental retardation and epilepsy. The findings of the present repo
rt are disscussed and compared with previous somehow similar studies i
n Mexico. As the information gathered in the study is quite extensive,
further reports will present data on acute and chronic patients, spec
ific disorders, hospitalization length, readmissions, specific disabil
ities and other related variables.