Sensitivity of ICD-10 diagnosis of psychotic disorders in the Israeli National Hospitalization Registry compared with RDC diagnoses based on SADS-L.
OBJECTIVE
The Israeli National Psychiatric Hospitalization Registry is a nationwide list of all psychiatric hospitalizations in the country and has been widely used as a source of data for psychiatric research. This study assessed the sensitivity of the diagnosis of psychotic disorders ( International Statistical Classification of Diseases, 10th Revision [ ICD-10 ] F20.0-F29.9) and schizophrenia ( ICD-10 F20.0-F20.9) in the Registry.


METHODS
Registry discharge diagnoses of psychotic disorders ( ICD-10 F20.0-F29.9) and schizophrenia ( ICD-10 F20.0-F20.9) were compared with research diagnoses derived from best-estimate procedures based on Research Diagnostic Criteria (RDC) using structured clinical research interviews, hospital records, and family information.


RESULTS
Out of 169 patients meeting RDC for psychotic disorder, 150 also had a diagnosis of psychotic disorders in the Registry, yielding a sensitivity of 0.89. Re-running this analysis for the narrow definition of schizophrenia identified 94 patients who were diagnosed with schizophrenia using RDC; 82 of those patients also had a diagnosis of schizophrenia in the Registry, yielding a sensitivity of 0.87.


CONCLUSIONS
In 87% to 89% of cases with psychotic disorders or with schizophrenia, Registry diagnoses agreed with RDC diagnoses, a rate of agreement comparable with those of other, similar registries. Because a large number of analyses derived from this and similar national registries will be published in the coming years, this constitutes relevant information.
Weiser
Mark
M
Department of Psychiatry, Sheba Medical Center, Tel Hashomer 52621, Israel. mweiser@netvision.net.il
Kanyas
Kyra
K
Malaspina
Dolores
D
Harvey
Philip D
PD
Glick
Ittai
I
Goetz
Deborah
D
Karni
Osnat
O
Yakir
Avi
A
Turetsky
Neil
N
Fennig
Shmuel
S
Nahon
Daniella
D
Lerer
Bernard
B
Davidson
Michael
M
D000328:Adult; D018912:Arabs / Q000523:psychology / Q000706:statistics & numerical data; D005260:Female; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D038801:International Classification of Diseases; D007406:Interview, Psychological; D007557:Israel / Q000453:epidemiology; D007585:Jews / Q000523:psychology / Q000706:statistics & numerical data; D008297:Male; D011618:Psychotic Disorders / Q000175:diagnosis / Q000208:ethnology / Q000534:rehabilitation; D012042:Registries; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires