A woman is exposed to multiple sex paners has 5 times increased risk for carcinoma cervix. The attributable risk is –
**Core Concept**
The attributable risk, also known as the risk difference, is a measure of the proportion of disease incidence that can be attributed to a specific risk factor. In this case, the attributable risk refers to the increased risk of cervical cancer associated with exposure to multiple sex partners.
**Why the Correct Answer is Right**
The attributable risk is calculated by subtracting the risk of disease in the unexposed group from the risk of disease in the exposed group. In this scenario, let's assume the risk of cervical cancer in the general population is 1%, and the risk in women exposed to multiple sex partners is 5%. The attributable risk would be 5% - 1% = 4%. This means that 4 out of 100 women exposed to multiple sex partners will develop cervical cancer, which is 4 times the risk in the general population.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is likely incorrect because it would imply that the attributable risk is 0, which is unlikely given the increased risk associated with multiple sex partners.
**Option B:** This option is incorrect because it would imply that the attributable risk is greater than the risk of disease in the exposed group, which is not possible.
**Clinical Pearl / High-Yield Fact**
The attributable risk is a useful measure for evaluating the impact of risk factors on disease incidence. It can be used to inform public health interventions and policy decisions, such as the development of screening programs or the implementation of prevention strategies.
**Correct Answer: A. 4%**