A recent study to measure social disability used the results of a questionnaire administered to 696 patients between March 14th and April 7th 2007 which showed that three-quarters of the population surveyed have a social disability. Major determinants of social disadvantage are found using three specific indicators: income, assets and home-interior comfort. A greater deterioration of poor health status was not particularly noted within the most socially disadvantage group of patients, and social disability did not lead to actual over-consumption of medical products or services. People with social disabilities remained hospitalised more than 1.5 days over the average length of hospital stay which accounts for an inferred additional costs to hospital budgets equivalent to 10.3 million ?. The article proposes a model for measuring social disability that can be used routinely upon patient admission to identify socially disadvantaged cases in order to offer those patients specific and tailored assistance and reduce the length of their stay. This model may also support public health policy monitoring.