Besides the analysis of levels and trends in care-taking since 1999, the social observation includes a description of the evolution of 115 user profiles (isolated or within a family) and an analysis of the outreach work of the Paris Samusocial. The match between supply and demand for sheltering may also be compared with the social policy and activity of shelter sites. Finally, all available data allows the schematization of care-taking in the long term.

Preparing the database of the Observatory:

At the start of each year, the 115 in Paris transmits its data, now anonymous, to the Observatory to undergo a statistical treatment. The first task is data cleansing by checking for duplicates, followed by a recoding of a certain number of information. This work improves the quality of information transmitted, avoiding double counting (each year about 5% of individual cards are identified as duplicates).

The information, once cleared, is then incorporated into the Observatory database. Two types of tables are then made:

-Cross tables, which correspond to each year. These tables are organized either by user (containing aggregate information on the number and type of lodging – shelters, emergency housing centers with nursing facilities, or hotel – each user will have received) or by date (to observe changes in the number of lodgings allocated each day)

-Longitudinal tables that reflect all of the lodgings for each user, aggregated by calendar year since the first call to the 115.

 Analyzing the data:

The database contains information on all calls and their handlings since 1999. This data is subject to various treatments and tests. Each year, the Observatory is responsible for producing an analysis of the Paris 115 data, which will be included in the activity report of the Paris Samusocial, and is ultimately destined for the MIPES (agency studying poverty and social vulnerability in Île-de-France) for its annual edition of "Handbook on poverty and social vulnerability in Ile-de-France”. The data is also analyzed during the production of the final evaluation of winter activity (period spanning from November 1 to March 31) or during specific studies on certain types of populations, requested by Samusocial teams, external partners, or trustees.