Table 2

Parameters considered in base case analysis and range for selected parameter estimates included in sensitivity analysis


Base Case Estimate


Proportion of population ≥ 40 years who participated in the screening program



Percentage of tests in screenees who reported to be under treatment for diabetes prior to screening


4.8 – 6.1a

Percentage of subjects in fasting state when screenedb


30 – 50%c

Percentage of positive screening testsd



Percentage of positive screenees who reported having diabetes diagnosis prior to the screening programe


14 – 18.1%a

Percentage of positive screenees who returned for confirmatory testing


0 – 100%c

Percentage of positive screenees who were diagnosed as having diabetes mellitus



Percentage of positive screenees diagnosed with diabetes and incorporated into the healthcare system



Additional local costs


10 – 25%f

Estimated labor costs

US$ 5.99 million

US$ 4.65 – 8.98 million

Percentage of positive screenees who returned for confirmatory testing in the public system (as opposed to the private health sector)


75 – 25%c

National Campaign to Detect Diabetes Mellitus. Brazil, 2001.

a Range corresponds to the 95% confidence interval of each estimate from the probabilistic sample.

b Fasting was defined as absence of food ingestion 4 hours prior to capillary glucose test.

c Range corresponds to an arbitrary estimate of the authors.

d Fasting glucose ≥ 5.6 mmol/l or a casual glucose ≥ 7.8 mmol/l.

e These subjects knew their previous diabetes diagnosis; however, they had not provided that information when asked about it during screening program.

f Range expressed as an additional percentage of national costs.

Toscano et al. BMC Health Services Research 2008 8:189   doi:10.1186/1472-6963-8-189

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