http://www.census.gov/hhes/www/povmeas/papers/altmoop.html

Two options for including amounts for medical out-of-pocket spending (moop) in poverty thresholds like those proposed by the National Research Council are presented. Using an experimental poverty dataset made available to the public by the Bureau of the Census, poverty rates are calculated under each option, with few large differences resulting. Compared to the NCR's proposal, poverty among the aged is lower under both options, but higher than under the current poverty measure.