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Diagnostic accuracy of the FINDRISC questionnaire for detecting type 2 diabetes mellitus in an indigenous population from Northeastern Sierra of Puebla, Mexico

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Diagnostic performance parameters of the FINDRISC questionnaire.
SampleFINDRISC cut-off pointSensitivity %(95% CI)Specificity %(95% CI)PPV %(95% CI)NPV %(95% CI)Diagnostic accuracy %(95% CI)
Total (n = 148)≥1276.4% (66.6 to 84.0)55.9% (43.3 to 67.9)72.3% (62.6 to 80.4)61.1% (47.8 to 73.0)68.2%(60.4 to 75.2)
≥1543.8% (34.0 to 54.1)72.9% (60.4 to 82.6)70.9% (57.9 to 81.2)46.2% (36.5 to 56.3)55.4%(47.4 to 63.2)
Females (n = 98)≥1285.2%(73.4 to 92.3)56.8%(42.2 to 70.3)70.8%(59.0 to 80.4) 75.8%(59.0 to 87.2) 72.5%(63.0 to 80.3)
≥1559.3%(46.0 to 71.3)72.7%(58.2 to 84.0)72.7%(58.2 to 83.7) 59.3%(46.0 to 71.3) 65.3%(55.5 to 74.0)
Males (n = 50)≥12 62.9%(46.3 to 76.8)53.3%(30.1 to 75.2)75.9%(57.9 to 87.8)38.1%(20.8 to 59.1) 60.0%(46.2 to 72.4)
≥15 20.0%(10.0 to 35.9)73.3%(48.1 to 89.1)63.6%(35.4 to 84.8) 28.2%(16.5 to 43.8) 36.0%(24.1 to 49.9)

FINDRISC, Finnish Diabetes Risk Score. CI, confidence interval. PPV, positive predictive value. NPV, negative predictive value.

Notes: Data for the cutoffs of ≥ 12 and ≥ 15 in the total sample and stratified by gender.