Multiannual

SINE is an ongoing system to observe and monitor a generation (or set) of new enterprises every four years.

In this case, a generation is a group of enterprises created over the same period (the first half) of a given year. Each generation of enterprises is therefore only represented by the companies created in the first half of the year.

For each generation, the information is collected using three surveys:
- the first, a few months after the creation of the enterprise;
- the second, at the end of the third year of existence of the enterprise;
- the third, five years after its creation.

The surveying of a new set is launched every 4 years.

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