Question:
The difference between the incidence in the exposed and the non-exposed group is best given by:
The difference between the incidence in the exposed and the non-exposed group is best given by:
Show Hint
The word difference signals a subtraction of incidences, not a ratio.
Updated On: Jun 23, 2026
- Relative risk
- Attributable risk
- Population attributable risk
- Odds ratio
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: The question asks for the difference between incidence in the exposed group and incidence in the non-exposed group. Focus on the word difference (a subtraction), not a ratio.
Step 2: Attributable risk (AR) is exactly that: \(AR = \text{incidence}_{exposed} - \text{incidence}_{non-exposed}\). It is expressed as a rate difference or percentage and shows how much of the disease can be attributed to the exposure in a cohort study.
Step 3: The distractors are ratios, not differences. Relative risk is the ratio of the two incidences. Odds ratio is the ratio of odds (used in case-control studies). Population attributable risk applies the AR to the whole population, including the proportion exposed.
Ref: Park's PSM, 25th ed., Page 86.
Step 2: Attributable risk (AR) is exactly that: \(AR = \text{incidence}_{exposed} - \text{incidence}_{non-exposed}\). It is expressed as a rate difference or percentage and shows how much of the disease can be attributed to the exposure in a cohort study.
Step 3: The distractors are ratios, not differences. Relative risk is the ratio of the two incidences. Odds ratio is the ratio of odds (used in case-control studies). Population attributable risk applies the AR to the whole population, including the proportion exposed.
Ref: Park's PSM, 25th ed., Page 86.
Was this answer helpful?
0
0
Top NEET PG PSM Questions
- Following admission of a RTA case, there is a spillage of blood on the hospital floor. Which disinfectant will you use to clean the floor?
- School health service is at which level?
- Post Diwali air pollution index chart was created. Air quality index values on 4 different days were plotted. An AQI value of 470 indicates which level of air pollution?
- A researcher wants to know whether there is an association of CRP values with risk of MI/Cancer. They started to take CRP readings. 4 values of RR (Relative Risk) were plotted (0.5, 1.5, 1.7, 1.8) with respect to CRP.
- A child known case of HIV. His CD4 count is 50. Which vaccine is avoided in him/her?
View More Questions
Top NEET PG Questions
- A patient hailing from Delhi presents with fever, arthralgia, and extensive petechial rash for 3 days. Lab investigations revealed a hemoglobin of 9 g/ dL, a white blood cell count of 9000 cells/mm3, a platelet count of 20000 cells/mm3, and a prolonged bleeding time. The clotting time was normal. What is the most likely diagnosis?
- Which of the following statements is true about Trichomonas vaginalis?
- A lady from West Rajasthan presented with an ulcer surrounded by erythema on the right leg. Microscopy of the biopsy from the edge of the ulcer showed organisms with dark staining nuclei and kinetoplast. What is the most likely causative agent?
- A child presents with a fever and a rash. Urine examination showed cells with owl's eye appearance. What is the most likely diagnosis?
- Infection with Clonorchis sinensis is associated with an increased risk of__?
View More Questions