Nokea
In the census of the Philippines in 1995, there were about 35,299,000 males and about 34,968,000 females. What is the sex ratio?
- A. 99.06:100
- B. 100.94:100
- C. 50.23%
- D. 49.76%
Correct Answer: B
Rationale: The sex ratio is calculated by dividing the number of males by the number of females and multiplying by 100. In this case, (35,299,000 / 34,968,000) x 100 = 100.94:100. This means for every 100 females, there are 100.94 males, indicating a slightly higher number of males.
Choice A (99.06:100) is incorrect as it suggests fewer males than females, which is not the case. Choice C (50.23%) and choice D (49.76%) are incorrect as they represent percentages rather than ratios, leading to a misleading interpretation of the data.
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Which of the following diseases is prevented by administration of the Hepatitis B vaccine?
- A. Jaundice
- B. Liver cancer
- C. Pneumonia
- D. Tuberculosis
Correct Answer: B
Rationale: The correct answer is B: Liver cancer. The Hepatitis B vaccine prevents Hepatitis B infection, which is a major cause of chronic liver disease and can lead to liver cancer. Jaundice (choice A) is a symptom of Hepatitis B infection, not a disease prevented by the vaccine. Pneumonia (choice C) and Tuberculosis (choice D) are both respiratory infections and are not prevented by the Hepatitis B vaccine. The key is to understand the specific disease targeted by the vaccine and its related health outcomes.
Civil registries are important sources of data. Which law requires registration of births within 30 days from the occurrence of the birth?
- A. PD 651
- B. Act 3573
- C. RA 3753
- D. RA 3375
Correct Answer: A
Rationale: The correct answer is A: PD 651. This law is the Civil Registry Law, which mandates the registration of births within 30 days. PD 651 was enacted specifically to ensure the timely and accurate recording of vital events. Act 3573 pertains to the reporting of communicable diseases, not birth registration. RA 3753 focuses on the use of an alias or pseudonym, not birth registration. RA 3375 involves the registration of firearms, not births. Overall, PD 651 is the most relevant law in requiring the registration of births within 30 days, making it the correct choice.
In the year 1980, the World Health Organization declared the Philippines, along with some other countries in the Western Pacific Region, 'free' of which disease?
- A. Pneumonic plague
- B. Poliomyelitis
- C. Smallpox
- D. Anthrax
Correct Answer: C
Rationale: The correct answer is C: Smallpox. In 1980, the World Health Organization declared the Philippines and other countries in the Western Pacific Region 'free' of smallpox due to successful global vaccination campaigns. Smallpox is caused by the variola virus and is characterized by a distinctive rash. The other choices are incorrect because:
A: Pneumonic plague is a severe form of the bubonic plague caused by the bacterium Yersinia pestis.
B: Poliomyelitis is a viral infection that can lead to paralysis, but it was not eradicated in 1980.
D: Anthrax is a bacterial infection that primarily affects animals but can also infect humans.
What is the interval between tetanus toxoid doses for pregnant women?
- A. 4 weeks
- B. 6 weeks
- C. 8 weeks
- D. 12 weeks
Correct Answer: A
Rationale: The correct interval between tetanus toxoid doses for pregnant women is 4 weeks. This short interval ensures optimal immunity for both the mother and the baby against tetanus. Giving the dose every 4 weeks during pregnancy helps maintain the protective levels of antibodies. Waiting longer intervals could decrease the effectiveness of the vaccine and leave the mother and baby vulnerable to tetanus infection. Choices B, C, and D are incorrect because longer intervals between doses may not provide adequate protection and could compromise immunity levels during pregnancy.
Which numerator is used in computing the general fertility rate?
- A. Estimated midyear population
- B. Number of registered live births
- C. Number of pregnancies in the year
- D. Number of females of reproductive age
Correct Answer: B
Rationale: The correct answer is B: Number of registered live births. The general fertility rate is calculated by dividing the number of live births in a specific period by the total number of women of reproductive age during that period. This numerator reflects the actual occurrence of live births in the population, making it the most appropriate measure for determining fertility rates accurately.
A: Estimated midyear population is not used as the numerator because it does not directly measure fertility rates.
C: Number of pregnancies in the year includes all pregnancies, not just live births, which would overestimate the fertility rate.
D: Number of females of reproductive age is not used as the numerator as it represents the total population, not the specific group giving birth.