The prevalence and response to different diseases varies by culture.

The prevalence of current cigarette smoking also varied substantially across population groups.

The prevalence varies from country to country, but is estimated to be between 0-3% of the population.

For intolerance to food additives the prevalence varied between 0.01 to 0.23%.

As might be expected, the prevalence of disability varied greatly with age.

The popularity and prevalence of different treatments varies widely by region.

In medicine and the social sciences, the prevalence of experimental research varies widely across disciplines.

Begging has happened in most societies around the world, though its prevalence and exact form vary.

The prevalence of condom use varies greatly between countries.