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. 2016 Jan 1;10(1):LC05–LC09. doi: 10.7860/JCDR/2016/14812.7039

[Table/Fig-3]:

Parameters for Prevalence calculation (Pe) from screening tests among Population 18 years of age and above.

Against gold standard of fasting
(≥7.0mmol/L or 126 mg/dl and above) True Prevalence (among above 18 y of age=4.58%)
Against gold standard of PP (≥11.1 mmol/L or 200 mg/dl and above) True Prevalence (among above 18 y of age=4.58%)
Screening test Cut off Se Sp P(A)* (Pe)** Cut-off Se Sp P(A)* P(e)**
Urine Sugar (double void) 180 mg/dl 65.2 99.9 0.03 4.45% 180 mg/dl 84.8 99.7 0.04 4.42%
Canrisk 7 89.1 53.2 0.48 4.49% 7 82.6 52.9 0.48 4.5%
MDRF-IDRS 60 52.2 68.6 0.32 4.3% 60 52.2 68.6 0.32 4.3%

Where, P(A)* is prevalence determined by screening test and P(e)** is estimated prevalence by each of the screening test.