[Screening ability of a questionnaire designed for the detection of diabetes mellitus in hospital outpatients clinic].
OBJECTIVE
The socio-economical burden of type 2 diabetes mellitus (DM2) recommends its screening when the disease is suspected. In the present study we aimed to evaluate: the results of the oral glucose tolerance test (OGTT) normally indicated in hospital outpatient clinics when diabetes is suspected, and the efficacy of the American Diabetes Association (ADA) diabetes risk questionnaire to detect glucose tolerance abnormalities.


METHODS
All subjects with an indication of OGTT were included consecutively. Individuals filled up a questionnaire including the ADA items. The sensitivity and specificity of the questionnaire were calculated.


RESULTS
Two hundred and twenty nine subjects were studied (62.9% women): 44.1% had normal glucose tolerance (NGT) with normal fasting glucose. Moreover, 6.5%, 25.8% and 23.6% showed an impaired fasting glucose, impaired glucose tolerance and diabetes, respectively. According to the questionnaire, 45.8% of subjects undergoing the OGTT had a positive risk of diabetes. The questionnaire revealed a sensitivity = 72.2%, specificity = 60.6% and a positive predictive value = 37.1%. Age was the only variable that increased the risk of DM (odds ratio = 3.48, p = 0.0001).


CONCLUSIONS
The important proportion of patients with NGT found in our study suggests the need to improve the indication of a diagnosis test when diabetes is suspected. One possibility would be to validate a questionnaire to detect the risk of diabetes in our own area.
Costa
Angels
A
Servei d'Endocrinologia i Diabetis. Institut d'Investigació Biomèdica August Pi i Sunyer (IDIBAPS). Hospital Clínic i Universitari de Barcelona. Barcelona. Spain.
Yuri
Ariel
A
Solà
Jordi
J
Conget
Ignacio
I
D000328:Adult; D003924:Diabetes Mellitus, Type 2 / Q000175:diagnosis*; D005260:Female; D005951:Glucose Tolerance Test; D006801:Humans; D008297:Male; D010044:Outpatient Clinics, Hospital; D018570:Risk Assessment; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires