COMAT Preventive Medicine and Public Health 3

Question 1

The PHQ-9 is a validated 9-item clinical screening tool used to detect and grade the severity of which condition?

Accepted Answer

Major depressive disorder

Answer

The PHQ-9 corresponds to the nine DSM criteria for major depressive disorder and is widely used for both screening and monitoring treatment response.

Question 2

Childhood vaccination against measles is an example of which level of prevention?

Accepted Answer

Primary prevention

Answer

Childhood immunization is primary prevention because it prevents disease from occurring in the first place by establishing immunity prior to pathogen exposure.

Question 3

In a 2×2 diagnostic contingency table, which cell represents individuals who test positive but do NOT have the disease?

Accepted Answer

False positive

Answer

False positives are individuals without the disease who receive a positive test result, reflecting imperfect specificity of the screening tool.

Question 4

According to CDC guidelines, at what blood lead level in children is chelation therapy generally indicated?

Accepted Answer

≥45 µg/dL

Answer

Chelation therapy (e.g., succimer) is indicated for blood lead levels ≥45 µg/dL in children, while lower levels trigger environmental and nutritional public health interventions.

Question 5

Which vaccine requires annual reformulation and administration because the causative pathogen undergoes rapid antigenic drift each season?

Accepted Answer

Influenza vaccine

Answer

Influenza virus undergoes antigenic drift annually, necessitating yearly reformulation of the vaccine to match circulating strains and annual administration for optimal protection.

COMAT - Comprehensive Osteopathic Medical Achievement Test Practice Test

COMAT - Comprehensive Osteopathic Medical Achievement Test Practice Test

COMAT Preventive Medicine and Public Health 3