Incidence and prevalence

It is easy to confuse the meanings of these two terms:

• Incidence refers to the number of new cases of a disease (or factor of interest) occurring in a defined population within a specified period of time.

• Prevalence refers to the total number of individuals who have the disease (or factor of interest) at a particular time or during a particular period in the population at risk of having the disease at this time.

Example: the prevalence of multiple sclerosis in temperate climates is 1 in 1 to 2000 compared with 1 in 10 000 in the tropics. The incidence of multiple sclerosis in the Australian state of Victoria (population 4 400 000) is 8 per 100 000 per year.

Dealing With Back Pain

Dealing With Back Pain

Deal With Your Pain, Lead A Wonderful Life An Live Like A 'Normal' Person. Before I really start telling you anything about me or finding out anything about you, I want you to know that I sympathize with you. Not only is it one of the most painful experiences to have backpain. Not only is it the number one excuse for employees not coming into work. But perhaps just as significantly, it is something that I suffered from for years.

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