Incidence or incidence rate (Epidemiology short lecture)

Incidence (Epidemiology lecture)
short ppt to understand incidence. primary incidence rate, secondary incidence rate, incidence rate, examples of incidence, incidence rate related question are discussed in this lec.

1. Written & Presented by: Muhammad Akbar Rashid Qadri (BSVS, MS HCM) Incidence

2. Statistical Terms Rate: Rate refers to the occurrence of events over a specific interval of time in a specific population Example : Number of deaths per 10,ooo population in one year.

3. Statistical Terms Ratio: It shows relation in size between two random quantities Example: Number of male deaths : No of female deaths

4. Statistical Terms Proportion: Occurrence of event in specific population (No specific Time) Example: No of deaths in specific population

5. Incidence: Number of new cases occurring in a defined population during a specific period of time Incidence calculation: New cases in defined population Incidence: x 10 n Total population at risk over a specific period of time

6. Incidence Rate Occurrence of new events in a specific period of time in a defined population Formula: Same as incidence New cases in defined population Incidence Rate: x 100 Total population at risk over a specific period of time

7. Types of Incidence Rate 1) Primary Attack Rate: Occurrence of new cases over a specific period of time New cases in specific period of time Attack rate: x 100 Total population at risk in specific period of time

8. Secondary Attack Rate Occurrence of new cases after primary cases in a specific period of time New cases after primary cases in specific period of time Secondary Attack rate: x 100 Total population (Minus primary cases) at risk in specific period of time

9. Q ????? Why we use x 10, x 100, x 1000, x 10,000, x 1,00,00 In Formula ?????????

10. Importance of incidence It is helpful In pathogeneses to find disease distribution to control diseases in preventive and therapeutic measurements in health policies making

11. How to solve questions