Attributable risk (AR)

Population attributable risk

risk in exposed group

Attributable fraction (AFe)

Afe is

Preventable fraction (PF)

Population attributable risk (PAR)

Population attributable fraction

Basic reproductive no R0

Net reproductive rate

Herd immunity

Conditions for herd immunity

Herd immunity threshold (HIT)

Standardisation

Direct standardisation

To calculate standardised mortality rates - step 1

To calculate standardised mortality rates - step 2

Comparative mortality figure

Indirect standardisation

For indirect mortality need to know

Calculate indirect mortality rate by

Standardised mortality ratio (SMR)

Validity

Reliability

Sensitivity

Specificity

Positive predictive value

Negative predictive value

Proportional mortality ratio (PMR)

mean pair agreement index

Kappa value of less than 0.5