[Do the new criteria of the American Diabetes Association lead to earlier diagnosis of type-2 diabetes mellitus?].
OBJECTIVE
To analyze the period of time between the first occasional fasting hyperglycaemia (OFH) and the diagnosis of type 2 diabetes mellitus (DM2), using the World Health Organization (WHO) criteria or the American Diabetes Association (ADA) criteria.


METHODS
Retrospective, observational study.


METHODS
Urban primary care centre.


METHODS
104 patients with DM2 diagnosed between 1991 and 1995 who had a previous OFH.


METHODS
Age, gender and other risk factors, dates of the first OFH (fasting plasma glucose >= 110 mg/dl), the diagnosis according to WHO criteria (2 fasting plasma glucose >= 140 mg/dl or >= 200 mg/dl two hours after the oral glucose test tolerance (OGTT)) or with the ADA criteria (2 fasting plasma glucose >= 126 mg/dl), and the intervals in months between them.


RESULTS
Of the 222 diagnosed patients, 104 (47%) had previous OFH. Age at diagnosis was 60.8 (SD 10.1) and 53% were women. OGTT was performed in 51 cases (49%). The median (range) of the interval between the first OFH and diagnosis was 16 months (0-101) for those who were undertaken an OGTT, and 45 months (1-104) for those who were not (p = 0.003). In these last ones, ADA criteria reduced the interval to 31 months (0-97) (p < 0.001). In 27 of these patients who did not satisfy both criteria at the same time, ADA criteria reduced the interval to 10 months (0-93) (p < 0.001).


CONCLUSIONS
Not performing the OGTT means a delay in diagnosis which can be countered by applying the ADA criteria.
Mata Cases
M
M
Centro de Atención Primaria La Mina. Unidad Docente de Medicina Familiar y Comunitaria de Barcelona. Institut Català de la Salut. mmata@medynet.com
Cos Claramunt
X
X
Pujol Ribera
E
E
Bobé Molina
I
I
Centelles Fernández
R
R
Ortiz López
R
R
Ramos Fuertes
A
A
Royo Pastor
C
C
D003924:Diabetes Mellitus, Type 2 / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012955:Societies, Medical; D014481:United States